Adopting the first patent product in the world -- Lastic of lien Pie in America, whose elasticity is very strong, lasting and durable, with particular compressed. It is formed by 18000 pound high pressure before selling, and returns to normal after released. It won’t sink locally, and hasn’t knotted, which improves its durability. Particular computer-embroidered handles, special design around, and addition memory foam, prove to be luxury. Make you a larruping feeling in the dream.