Yes, you can exchange it for a new one with a 10,000 yen discount on your next purchase.
Please see here for details.
*Web purchase and member registration are required.

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

STEP 2: Pour water for about 15 seconds to set the fluffiness
Tap water is fine.
*During hot summer days, the effectiveness may be reduced 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 quickly, wrap the pillow in a bath towel and gently shake it up and down to remove excess water before drying.

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

We also offer the "Brain Sleep Pillow Adjust Sheet" which allows you to adjust the height of the Brain Sleep Pillow to provide the best fit at all times, depending on your physical condition and mood.



If you wish to exchange, please send the following information using the "Contact Form".
*The 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]:
[Requested Exchange Size]:
[Usage Period *Please try for at least 1 week]:
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For Brain Sleep Pillow size exchanges, the exchange will be handled by simultaneous collection, where you hand over your current pillow to the delivery person when the replacement product is delivered.
*We will cover the shipping cost for simultaneous collection.
*Please note that exchanges other than simultaneous collection, such as when the product is not at hand, cannot be accepted.
*Please continue to use your pillow cover. If you send it with the exchanged product, we will not be able to return it.
*If you purchased through shopping malls such as Amazon, Rakuten, or Yahoo!, you will need to register as a member on the BRAIN SLEEP OFFICIAL SITE for size exchanges.

You can also purchase at retail stores. The products handled vary by store, so
please check here for details.

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

① Rinse the entire pillow with shower water.
If you're particularly concerned about dirt or odor, use a diluted neutral detergent.

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

[Cautions when cleaning the pillow body]
Avoid maintaining the pillow by propping it up, bending it, placing objects on it, or applying pressure, as this may cause wrinkles or depressions in the pillow.
Do not use water hotter than 51℃.
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 firm side of the pillow facing up. After tucking in and adjusting the pillow cover flap, flip the pillow upside down and use it.
*When using the pillow, make sure your head rests on the side with the mesh.

The pillow has a mark to distinguish the front and back. Please use the pillow with the marked side facing down. Also, please do not remove the mark.
If you are unsure which side is which, the side with finer, softer fibers is the front, and the side with coarser, firmer fibers is the back, so please feel to check.

When not using the pillow during the day, avoid high temperatures and humidity and store it without applying weight from above.
Avoid storing in direct sunlight or hot places.