Inside stuffy shoes,
Changed with patented air circulation structure.

The air circulation principle remains the same,
A functional insole with added height increase and arch support.

CASTOIS Air Circulation Height Increase Arch Insole.

Have your everyday shoes been comfortable?

We spend more time wearing shoes each day than we think.

On the way to work, during working hours, long walks, exercise, hiking, and even at work sites.
When you wear shoes for a long time, the inside easily becomes stuffy,

and heat and moisture tend to build up.

Especially for those who sweat a lot on their feet, the smell and stuffiness inside the shoes

often cause discomfort.

That's why we didn't just make a soft insole,
but prepared a functional insole that considers air flow inside the shoe.

Existing insoles had these shortcomings.

Typical insoles often focus on just one function,

such as cushioning or arch support.

However, what people who wear shoes for long periods actually want

is not just one thing.

*Managing stuffiness inside shoes

*Manages concerns about sweat and odor.

*Comfortable cushioning.

*Arch support that cradles your feet.

*Natural height-increasing effect.

*Practicality for use with various shoes.

The insole developed with all these aspects in mind

is the CASTOIS Air Circulation Height-Increasing Arch Insole.

Domestic invention patent-based air circulation structure.

The CASTOIS insole is based on a domestic invention patent,

and is a functional insole with an air circulation structure.

When walking, the pressure from your feet

is designed to move the air inside the insole.

When you press the insole with your foot, the internal air is expelled,
and when you lift your foot, external air

is drawn back in through the structure,
to more comfortably manage the stuffiness, sweat, and odor inside your shoes.

We aimed to manage these concerns more pleasantly.

It is not simply a ventilated insole with holes,
but an air circulation structure designed

so that air moves with every step you take.

Comfort that comes alive the more you move.

If left alone, the air inside your shoes easily becomes stagnant.

CASTOIS insoles utilize the user's walking motion,

and are designed to circulate air.

With every step, the pressure from your feet is transferred to the insole,
and this pressure creates an internal airflow.

It's a small difference you can't see,
but for those who wear shoes for long periods,

the comfort inside your shoes can make a significant difference.

Added height increase.

This product maintains the original air circulation principle,
while adding a new height-increasing function to the insole.

By adding a natural lift,

we designed it to provide a comfortable height increase effect,

so you won't feel burdened when wearing them.

Just because it's a height-increasing insole,

doesn't mean we simply made it taller.
We also considered arch support and cushioning,

as well as the air circulation structure.

Designed with arch support in mind.

For your feet to feel comfortable, it is important to provide stable support for the entire sole.

The structure that supports the foot is crucial.

CASTOIS insoles are designed to naturally support the arch area.

They are engineered to provide proper support.
We considered both comfort and stability.

For those who stand for long periods or walk a lot,
or whose soles easily feel fatigued when wearing shoes,

we aimed to offer a more comfortable wearing experience.
We wanted to provide greater comfort for those who easily feel foot fatigue.

※ Comfort may vary depending on individual foot shape and shoe type.

We also considered cushioning.

Insoles are products that come into direct contact with your feet all day.

Therefore, in addition to the air circulation structure,
we also placed importance on cushioning and comfort while walking.

CASTOIS insoles use cushioned materials,
so you can wear your shoes more comfortably even for long periods.

They are designed for comfortable wear even during extended use.

This is not just a simple height-increasing insole,
but a functional insole that considers height increase, arch support, cushioning, and air circulation together.

It is a functional insole that takes all these features into account.

We also considered slip resistance.

If the insole moves inside the shoe,

it can make wearing them uncomfortable.

CASTOIS insoles feature patterns on the surface that touches your foot and on the bottom structure,

designed with slip resistance in mind.

For a more stable wearing experience,
they are designed to prevent the insole from slipping easily inside the shoe.

※ Comfort may vary depending on the material of your socks, the inside of your shoes, and your wearing environment.

Can be used in various types of shoes.

CASTOIS insoles are prepared for use in a variety of shoes you wear frequently,

both in daily life and active environments.

* Sneakers

* Dress shoes

* Hiking boots

* Work shoes

* Rubber boots

* Military boots

* Safety shoes

The longer you wear your shoes,
the more you may worry about stuffiness, sweat, and odor inside your shoes.

CASTOIS air circulation height-increasing arch insoles
Make the inside of your everyday shoes more comfortable and pleasant.

These are functional insoles designed to improve your shoes.

Recommended for these people

Those who wear shoes for long hours every day.

Those who are concerned about stuffiness, sweat, or odor inside their shoes.

Those who frequently wear sneakers, work shoes, hiking boots, military boots, or rubber boots.

Those looking for insoles with a natural height-increasing effect.

Those who want both arch support and cushioning.

Those who want to keep the inside of their shoes fresher.

Size Guide

CASTOIS insoles are available in S / M / L sizes.

S: 230~250mm
M: 255~270mm
L: 275~290mm

After comparing with the existing insoles inside your shoes,
You can trim the front part little by little if necessary.

How to Use

First, remove the existing insoles from your shoes.

Align the heel parts of the existing insole and the CASTOIS insole to compare them.

If the size is too large, please trim only the front part little by little.

After trimming, insert it into your shoes and check the fit.

Important Notice
When cutting the insole, the film structure responsible for air circulation

should never be cut.

If the film is damaged, it may affect the air circulation function.

Care Instructions

After prolonged use, remove the insole and dry it in a well-ventilated area.

If there is dust or lint, gently shake it off or wipe it with a dry cloth.

If you prevent foreign substances from accumulating in the air outlet,
you can use it more comfortably.

After washing, avoid direct sunlight or high-temperature drying,
and let it air dry in a well-ventilated place.

Key points confirmed from actual user reviews

Existing users have shared their opinions on the following points.

Opinions that the size fits well and the finish is neat.
Opinions that there is a feeling of ventilation.
Opinions that it is convenient to use in work shoes or sneakers.
Opinions that the stuffiness inside the shoes seems to have decreased.

The fit may vary depending on the shape of your feet, type of shoes, and usage environment.

We base our work on actual user feedback.
We will continue to improve and develop better products.

Reward Composition

For Wadiz supporters, we have prepared both single and set options.

The single option is recommended for those who want to try one set first.

The 2-set option is recommended for use with family, couples, or friends,
or for those who want to use them in multiple pairs of shoes.

You can choose from sizes S / M / L.

Frequently Asked Questions

Q. Should I remove the original insole before use?

A. Yes. We recommend removing the original insole inside the shoe before use.

Q. Can I cut it if the size is too big?

A. Yes. After comparing with the original insole, you can trim the front part little by little. However, do not cut the film structure responsible for air circulation.

Q. What types of shoes can I use these in?

A. They can be used in various shoes such as sneakers, dress shoes, hiking boots, work shoes, rain boots, military boots, and safety shoes. However, if the inside space of the shoe is too narrow, the fit may differ.

Q. Does it have a height-increasing effect?

A. Yes. This is a functional insole with a height-increasing feature added to the original air circulation structure. We considered both a natural height boost and comfort.

Q. Does it provide arch support?

A. Yes. It is designed to naturally support the arch area, considering both comfort and stability.

Q. How does the air circulation function work?

A. When you walk, the internal air is expelled by the pressure of your foot, and when you lift your foot, external air flows back in.

Q. Can it be washed?

A. Please wipe it gently to manage it when it gets dirty. After cleaning, let it air dry in a well-ventilated area.

Maker's Promise

CASTOIS Air Circulation Height-Increasing Arch Insole
Manages discomfort, sweat, and odor inside shoes more comfortably,
while also considering height increase, arch support, and cushioning.

This is a functional insole prepared with all these features in mind.

Based on the valuable feedback from our supporters,
we will continue to improve and develop better products.

We sincerely thank everyone who shows interest first through Wadiz

and supports us.

Inside stuffy shoes,Changed with patented air circulation structure.

The air circulation principle remains the same,A functional insole with added height increase and arch support.

CASTOIS Air Circulation Height Increase Arch Insole.

Have your everyday shoes been comfortable?

We spend more time wearing shoes each day than we think.

On the way to work, during working hours, long walks, exercise, hiking, and even at work sites.When you wear shoes for a long time, the inside easily becomes stuffy,

and heat and moisture tend to build up.

Especially for those who sweat a lot on their feet, the smell and stuffiness inside the shoes

often cause discomfort.

That's why we didn't just make a soft insole,but prepared a functional insole that considers air flow inside the shoe.

Existing insoles had these shortcomings.

Typical insoles often focus on just one function,

such as cushioning or arch support.

However, what people who wear shoes for long periods actually want

is not just one thing.

*Managing stuffiness inside shoes

*Manages concerns about sweat and odor.

*Comfortable cushioning.

*Arch support that cradles your feet.

*Natural height-increasing effect.

*Practicality for use with various shoes.

The insole developed with all these aspects in mind

is the CASTOIS Air Circulation Height-Increasing Arch Insole.

Domestic invention patent-based air circulation structure.

The CASTOIS insole is based on a domestic invention patent,

and is a functional insole with an air circulation structure.

When walking, the pressure from your feet

is designed to move the air inside the insole.

When you press the insole with your foot, the internal air is expelled,and when you lift your foot, external air

is drawn back in through the structure,to more comfortably manage the stuffiness, sweat, and odor inside your shoes.

We aimed to manage these concerns more pleasantly.

It is not simply a ventilated insole with holes,but an air circulation structure designed

so that air moves with every step you take.

Comfort that comes alive the more you move.

If left alone, the air inside your shoes easily becomes stagnant.

CASTOIS insoles utilize the user's walking motion,

and are designed to circulate air.

With every step, the pressure from your feet is transferred to the insole,and this pressure creates an internal airflow.

It's a small difference you can't see,but for those who wear shoes for long periods,

the comfort inside your shoes can make a significant difference.

Added height increase.

This product maintains the original air circulation principle,while adding a new height-increasing function to the insole.

By adding a natural lift,

we designed it to provide a comfortable height increase effect,

so you won't feel burdened when wearing them.

Just because it's a height-increasing insole,

doesn't mean we simply made it taller.We also considered arch support and cushioning,

as well as the air circulation structure.

Designed with arch support in mind.

For your feet to feel comfortable, it is important to provide stable support for the entire sole.

The structure that supports the foot is crucial.

CASTOIS insoles are designed to naturally support the arch area.

They are engineered to provide proper support.We considered both comfort and stability.

For those who stand for long periods or walk a lot,or whose soles easily feel fatigued when wearing shoes,

we aimed to offer a more comfortable wearing experience.We wanted to provide greater comfort for those who easily feel foot fatigue.

※ Comfort may vary depending on individual foot shape and shoe type.

We also considered cushioning.

Insoles are products that come into direct contact with your feet all day.

Therefore, in addition to the air circulation structure,we also placed importance on cushioning and comfort while walking.

CASTOIS insoles use cushioned materials,so you can wear your shoes more comfortably even for long periods.

They are designed for comfortable wear even during extended use.

This is not just a simple height-increasing insole,but a functional insole that considers height increase, arch support, cushioning, and air circulation together.

It is a functional insole that takes all these features into account.

We also considered slip resistance.

If the insole moves inside the shoe,

it can make wearing them uncomfortable.

CASTOIS insoles feature patterns on the surface that touches your foot and on the bottom structure,

designed with slip resistance in mind.

For a more stable wearing experience,they are designed to prevent the insole from slipping easily inside the shoe.

※ Comfort may vary depending on the material of your socks, the inside of your shoes, and your wearing environment.

Can be used in various types of shoes.

CASTOIS insoles are prepared for use in a variety of shoes you wear frequently,

both in daily life and active environments.

* Sneakers

* Dress shoes

* Hiking boots

* Work shoes

* Rubber boots

* Military boots

* Safety shoes

Inside stuffy shoes,
Changed with patented air circulation structure.

The air circulation principle remains the same,
A functional insole with added height increase and arch support.

On the way to work, during working hours, long walks, exercise, hiking, and even at work sites.
When you wear shoes for a long time, the inside easily becomes stuffy,

That's why we didn't just make a soft insole,
but prepared a functional insole that considers air flow inside the shoe.

When you press the insole with your foot, the internal air is expelled,
and when you lift your foot, external air

is drawn back in through the structure,
to more comfortably manage the stuffiness, sweat, and odor inside your shoes.

It is not simply a ventilated insole with holes,
but an air circulation structure designed

With every step, the pressure from your feet is transferred to the insole,
and this pressure creates an internal airflow.

It's a small difference you can't see,
but for those who wear shoes for long periods,

This product maintains the original air circulation principle,
while adding a new height-increasing function to the insole.

doesn't mean we simply made it taller.
We also considered arch support and cushioning,

They are engineered to provide proper support.
We considered both comfort and stability.

For those who stand for long periods or walk a lot,
or whose soles easily feel fatigued when wearing shoes,

we aimed to offer a more comfortable wearing experience.
We wanted to provide greater comfort for those who easily feel foot fatigue.

Therefore, in addition to the air circulation structure,
we also placed importance on cushioning and comfort while walking.

CASTOIS insoles use cushioned materials,
so you can wear your shoes more comfortably even for long periods.

This is not just a simple height-increasing insole,
but a functional insole that considers height increase, arch support, cushioning, and air circulation together.

For a more stable wearing experience,
they are designed to prevent the insole from slipping easily inside the shoe.

The longer you wear your shoes,
the more you may worry about stuffiness, sweat, and odor inside your shoes.

CASTOIS air circulation height-increasing arch insoles
Make the inside of your everyday shoes more comfortable and pleasant.

S: 230~250mm
M: 255~270mm
L: 275~290mm

After comparing with the existing insoles inside your shoes,
You can trim the front part little by little if necessary.

Important Notice
When cutting the insole, the film structure responsible for air circulation

If you prevent foreign substances from accumulating in the air outlet,
you can use it more comfortably.

After washing, avoid direct sunlight or high-temperature drying,
and let it air dry in a well-ventilated place.

We base our work on actual user feedback.
We will continue to improve and develop better products.

The 2-set option is recommended for use with family, couples, or friends,
or for those who want to use them in multiple pairs of shoes.

CASTOIS Air Circulation Height-Increasing Arch Insole
Manages discomfort, sweat, and odor inside shoes more comfortably,
while also considering height increase, arch support, and cushioning.

Based on the valuable feedback from our supporters,
we will continue to improve and develop better products.