Dianno Quality Cycling Jersey polyester Imported US Customer had better choose one size larger. Slim Cut. 3D draping in riding postion. Jersey: Front, Rear And Side Pannel: 100% Polyester. Dianno 106g/ Super light Honeycomb mesh fabric. breathable and quickly drying mesh material with very good moisture management. Sleeve Panel: Mesh Spandex offer excellent elastic to make fabric close to the body to reduce wind drag. Jersey with three-compartment rear pocket. Dianno Elastic Silicone Hem. Full zip(quality SBS zip,up to 3000 times) Size Help: the exact way to find your size is refer our sizing chart. If you cant measure your body, You would refer your normal clothing size and choose one bigger size. For example. Your normal clothing size is L. If you want tight or you have thin body, You should choose size L. If you want just fit, You should choose size XL. If you want loose, You should choose 2XL quality jersey