Weight is 78G,it folds up small for easy carry.material is elastic fabric,that's light and highly breathable，Fits for head circumference about 52-66cm, Equipment Matching:Users can use with a cap or tactical helmet. Provide protection in various activities: army, paintball,CS game, hunting, shooting. Advantage one：Breathable mouth guard ensure users can breathe smoothly when wearing it ,the mouth guard is designed with cushion pad around it to further improve wearing comfort Advantage two：fits different mouth shapes,finely adjust the mesh mouth guard to suit different users' mouth shapes available color：CP OD BK Tan CMAIR4U Airsoft Balaclava Mask,Ninja Tactical Mask with Breathable Mouth Guard for Outdoor