Perfect seat cover - The bike seat cover is filled with harmless and environmentally friendly gel and high density foam. The combination of gel and foam makes it soft and elastic, which brings a better experience. The surface is made of high quality fabric to make it wear resistant and extend the service life. Breathable Design - The surface of the bicycle seat cushion is made of premium fabric to make it more comfortable and durable and greatly extend the service life. The hollow design of the bicycle seat cover accelerates the air circulation, keeps the hips cool and dry and makes you feel less stressed when driving. Non-slip and easy to install - The bottom has a special shock design and drawstring to prevent slipping and fixing. Easy to install, requires no other tools, fix the bike seat cover and pulls and secures the drawstring for normal use, very simple. Area of application: cushion covers are suitable for all kinds of indoor bicycles, spinbis, cruiser, etc. The size of the bicycle cushion is 275mm x 300mm. It is suitable for the width of the bicycle seat in the range of 21-26 mm. 1 YEAR QUALITY GUARANTEE - If you are not completely satisfied with the purchase you made for any reason, or if you have any quality problems within one year. Please feel free to email us. Or you just need to return the product for a full refund.