Yes, for your next purchase, you can exchange it 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 using the following 3 steps once every 1-2 months.
STEP 1: Pour 45-50℃ hot water 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 water for about 15 seconds to set the fluffy texture
Tap water temperature is fine.
*During hot summer days, the effect may be reduced as tap water temperature rises.

STEP 3: Dry in a well-ventilated shaded area
Dry it flat 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.

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

Additionally, we also offer the "Brain Sleep Pillow Adjust Sheet" to adjust the height of the Brain Sleep Pillow to provide the best fit for your condition, mood, etc., on any given day.



If you wish to exchange, please send the following information using the "Inquiry Form".
*Exchange service is only available for purchases made on the BRAIN SLEEP OFFICIAL SITE and BRAIN SLEEP official online stores (Rakuten Ichiba, 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】:
【Period of Use *Please try for at least one week】:
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For size exchanges of Brain Sleep Pillows, when the replacement item is delivered, the courier will simultaneously collect your existing pillow.
*Shipping costs for simultaneous collection will be borne by us.
*Please note that we cannot accept exchanges if the product is not on hand or for any other exchange methods other than simultaneous collection.
*Please continue to use your pillowcase. If you send it along with the replacement, 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 exchanges.

You can also purchase at retail stores. Product availability varies by store, so
please check here for details.

When you are concerned about dirt or odor, clean it 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, 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 leaning, bending, placing objects on top, or applying pressure during maintenance, as this may cause wrinkles or indentations in the pillow.
Do not use hot water above 51℃.
Avoid drying in direct sunlight or with hot air.
Hair products and 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 with the mesh side of the pillow cover facing down and the firm side of the pillow facing up. Adjust the flap of the pillow cover by tucking it in, then flip the pillow upside down to 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 when using.
If you cannot tell the front and back, the side with finer, softer fibers is the front, and the side with thicker, harder fibers to the touch is the back. Please feel it to confirm.

When not using the pillow during the day, store it away from high temperatures and humidity, without applying pressure from above.
Avoid storing it in direct sunlight or in high-temperature areas.