Polyester,MesMachine WashLightweight&Breathable:Made from 100% POLYESTER MESH fabric. The material is Light Weight, Breathable, Stretchable and Machine Washable.Not Get Overheated: Because the vest itself is light and breathable, it allows you to relax easily during exerciseQuick-drying: Made of mesh material, breathable and thin, quick-drying, easy to use againFor Ball SportsIt is suitable for adult or youth sport such as lacrosse, soccer, football, hockey, basketball or volleyball.MULTIPLE SIZES: Use Medium for Child, Large for Adult and XXL for Big and Tall Adult.EXCELLENT AFTER-SALES SERVICE - We offer you 30 Days No-Hassle-Return Policy and Technical After-Sales Service.