Yamasei Kankyou Allergy Kenkyuujo “Allergy Clear”

Yamasei Kankyo Allergy Kenkyujo Corp. (Tokyo)

This bedding is designed to prevent, treat and improve allergies to dust mites. Dust mite allergens are the main cause of atopic dermatitis, allergic rhinitis and asthma. The company has focused on the fact that the cotton in the bedding people use every day is a major cause and has worked to develop a new type of bedding that is resistant to mites, obtaining four patents in the process. With this patented manufacturing method, the company has achieved the complete elimination of causative agents through a special high-heat treatment without allowing any mites to pass through the fabric or needle holes. In addition, the side fabric that directly touches the skin is made of 100% cotton, a special high-density woven fabric, and the double-layered inner bag is also made of 100% cotton. The same method applies to covers, sheets and pillowcases, which are manufactured at designated factories in Japan without using any insecticides or other chemicals. This is a bedding that prevents dust mites and keeps the air clean and dust-free; therefore, even babies can use it safely. In addition to existing products, the company also accepts orders for custom-made products in any size required. This product is the only one that has demonstrated an improvement rate of a more than 90% elimination ratio in 751 cases in a research project conducted by the Ministry of Health, Labour and Welfare. The company has also received written confirmation from the Ministry of Health, Labour and Welfare that there are no advertising violations under the Pharmaceutical Affairs Law and the Act Against Unjustifiable Premiums and Misleading Representations. Yamasei Kankyo Allergy Kenkyujo Corp. is committed to providing products that can help people who suffer from allergy symptoms.

Yamasei Kankyo Allergy Kenkyujo Corp. (東京都練馬区)

2023 Award
Genre: Daily necessities


‘- Single item 3 types
Middle thickness comforter
Comforter cover
Futon mattress cover
– Set – 3 types
Comforter set: 1 each (comforter, futon mattress, blanket, sheet, comforter cover, futon mattress cover, cotton pillow, pillowcase)
Comforter set for winter: 1 each (winter comforter, futon mattress, blanket, sheet, comforter cover, futon mattress cover, cotton pillowcase, pillowcase)
Total set: 1 each (winter comforter, coverlet, futon mattress, blanket, sheet, futon mattress cover, cotton pillowcase, pillowcase), 2 sheets (comforter cover)
*Set contents are for single and junior size beds.
*For double size bed, 2 cotton pillows and 2 pillowcases


Total 3 types


Total 7 colors:
Solid blue
Solid pink
Solid beige
Castle pink
Castle green
Stars and bears pink
Stars and bears blue

Price (excluding tax) ※ Please see the latest pricing and tax information on the company's home page.

‘- Comforter
Single JPY22,950
Double JPY27,090
Junior JPY21,240

– Comforter cover
Single JPY12,960
Double JPY15,300
Junior JPY11,790

– Bedcover
Single JPY11,790
Double JPY14,175
Junior JPY10,620

– Cover set
Single JPY130,480
Double JPY144,021
Junior JPY116,620

– Total set

– Winter cover set
(All excluding tax)