Sweat Shirt With Zip, Rib On Sleeves And Waist For Better Adjustment. Round Neck.Specifications:- Material: 100% Polyester InterlockTechnology:Interlock:- It Is A Fabric Of Flat And Double Point, Which Looks The Same At Both Sides, It Has Good Elasticity And High Durability, Giving The Garment A Very Smooth And Dense Material With An Extra Smooth Surface