Yes, for your next purchase, you can exchange your old pillow for a new one with a 10,000 yen discount.
Please check here for details.
*Web purchase and membership registration are required.

We recommend maintenance every 1-2 months following these 3 steps:
STEP 1: Pour 45-50°C hot water over it for about 60 seconds
Place it on a flat surface and pour hot water over the areas you are concerned about.
Avoid pouring hot water while it 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.
*The effect may be reduced if the tap water temperature rises on very hot summer days.

STEP 3: Dry in a well-ventilated, shaded area
Lay it flat to dry.
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.

Please try it for one week first. If you wish to exchange it after trying, for Brain Sleep Pillows [LOW, STANDARD, HIGH] only, we will accept size exchanges within 30 days of product arrival.
Please note that size exchanges are not accepted for other products.
Exchanges are limited to one time only. 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 the Brain Sleep Pillow to provide the best fit for your physical condition and mood.



If you wish to exchange, please send the following information using the "Contact 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 exchange item will be delivered, and you will hand your current pillow to the delivery person for simultaneous collection.
*The delivery fee for simultaneous collection will be borne by us.
*Please note that exchanges cannot be made if the product is not on hand or if simultaneous collection is not possible.
*Please continue to use your pillow cover. If you send it with the exchange item, we cannot return it.
*If you purchased from shopping malls such as Amazon, Rakuten, or Yahoo!, membership registration on the BRAIN SLEEP OFFICIAL SITE is required for size exchange.

You can also purchase at retail stores. Product availability varies by store, so 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 diluted neutral detergent.

② Air dry in a well-ventilated, flat, shaded area.
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.

[Precautions 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 wrinkles or indentations in the pillow.
Do not use hot water above 51°C.
Avoid drying in direct sunlight or with hot air.
Hair products or cosmetics may cause discoloration. Please note that if the material itself discolors, it cannot be restored to its original color even with cleaning.

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

See how to choose the right pillow for you

Place the pillow cover with the mesh side facing down and the hard side of the pillow facing up. Adjust the flap of the pillow cover inside, then flip the pillow upside down and use it.
*Please use the pillow so that your head rests on the mesh side.

The pillow has a mark to indicate the front and back. Please use the pillow with the marked side facing down. Also, please do not remove the mark.
If you can't tell the front from the back, feel it: the side with finer, softer fibers is the front, and the side with thicker, harder fibers is the back.

When not using the pillow during the day, store it in a cool, dry place, avoiding humidity and without placing any weight on it.
Avoid storing it in direct sunlight or in high-temperature areas.