Yes, for your next purchase, you can exchange it for a new one with a ¥10,000 discount.
For details, please check here.
*Requires web purchase and member registration.

We recommend performing the following 3-step maintenance once every 1-2 months.
STEP 1: Pour 45-50°C hot water for about 60 seconds
Place the pillow on a flat surface and pour hot water over the areas of concern.
Please refrain from pouring hot water while the pillow is propped up or under pressure, as this may cause deformation.

STEP 2: Pour cold water for about 15 seconds to set the fluffiness
Tap water temperature is fine.
*During hot summer days, the effectiveness may decrease as tap water temperature rises.

STEP 3: Dry in a well-ventilated shaded area
Lay flat to dry on a flat surface.
Avoid direct sunlight or hot air drying.
If you want to dry it faster, wrap the pillow in a bath towel and gently shake it up and down to remove excess water before drying.

Please try it for one week first. If you wish to exchange it after trying, we accept size exchanges for Brain Sleep Pillow [LOW, STANDARD, HIGH] only, within 30 days of product arrival.
Please note that size exchanges are not accepted for other products.
Exchanges are limited to one time. Please note that re-exchanges or returns after an exchange are not possible.

Additionally, we offer the "Brain Sleep Pillow Adjust Sheet" to adjust the height of your Brain Sleep Pillow, providing the best fit according to your physical condition and mood.



If you wish to exchange, please send the following information to the "Inquiry Form".
*Exchange service is only available for purchases made on the BRAIN SLEEP OFFICIAL SITE and BRAIN SLEEP official online stores (Rakuten, Yahoo! Shopping, Amazon).
*When requesting an exchange, we will ask for your order number to confirm your purchase history.

----------------------------------------------------
[Order Number]:
[Purchased Size]:
[Desired Exchange Size]:
[Usage Period *Please try for at least one week]:
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For Brain Sleep Pillow size exchanges, the exchanged item will be delivered, and you will hand your current pillow to the delivery person for simultaneous collection.
*We will cover the shipping cost for simultaneous collection.
*Please note that exchanges other than simultaneous collection, such as when you do not have the product on hand, cannot be accepted.
*Please continue to use your current pillowcase. If you send it with the exchanged item, we will not be able to return it.
*If you purchased from shopping malls such as Amazon, Rakuten, or Yahoo!, you will need to register as a member on the BRAIN SLEEP OFFICIAL SITE for a size exchange.

You can also purchase at retail stores. As products carried may vary by store,
please check here for details.

When concerned about dirt or odor, clean with shower water.

① Rinse the entire pillow with shower water.
If dirt or odor is particularly bothersome, use a diluted neutral detergent.

② Air dry in a well-ventilated, shaded, flat place.
If you want to dry it faster... wrap the pillow in a bath towel, gently shake it up and down to remove excess water, then dry.

[Cautions when cleaning the pillow body]
Avoid maintaining the pillow by leaning it, bending it, placing objects on it, or applying pressure, as this may cause creases or indentations in the pillow.
Do not use hot water above 51°C.
Avoid drying in direct sunlight or with hot air.
Discoloration may occur due to hair products or cosmetics. Please note that if the material itself has discolored, it cannot be restored to its original color even with cleaning.

We recommend choosing the height based on your physique and preference. STANDARD is generally recommended. If you prefer a higher pillow, HIGH is recommended, and if you prefer a lower one, LOW is recommended.

See how to choose the right pillow for you

Place the pillow cover with the mesh side facing down and the firm side of the pillow facing up. After adjusting the pillow cover flap inside, flip the pillow over and use it.
*Please use the pillow with your head resting on the mesh side.

The pillow has a mark to distinguish the front and back. Please use the pillow with the mark facing downwards. Also, please do not remove the mark.
If you are unsure which is the front or back, the side with finer, softer fibers is the front, and the side with thicker, harder fibers to the touch is the back. Please check by touching.

When not using the pillow during the day, store it away from high temperatures and humidity, without placing any weight on it.
Avoid storing it in direct sunlight or in high-temperature areas.