Color as shown in photo noise ear Choose the imported high elasticity polyester materials, noise without ear swelling. The ear plugs do not bring no comfort, noise effect is obvious, when the outside was very noisy very quiet 30 db noise reduction. If you're traveling, dormitory and other environment plagued by noise, it will give you a quiet world, will give you rest, study hard. Soft, smooth, nonirritating, self-adjusting advanced foam formula Excellent attenuation-NRR 30dB Elastic string (Adjustable) inflatable pillow pillow, also known as driving, air pillow, " U" type structure, consistent with human physiology works. Shoulder and neck Linear care and reduce neck fatigue, sleep will not skew the body. Can fill the back waist and can increase the head buoyancy in swimming eye mask dark materials for the multi-layer, dark it breathable. Let your light as a strong place to rest in the evening. Train, car, plane, room, and sleep on the light-sensitive people, and now bring it to sleep, you will be particularly comfortable.