82% Polyamide, 18% Elastane Imported MILITARY GRADE PROTECTION: The Exoshield Head Guard is a highly rated ASTM Certified head protection for soccer and other heavy-duty sports; Armored with 9mm of military-grade Team Wendy Zorbium foam; This foam is used in the U.S. Army, Navy, and Marine Corps helmets; Designed to reduce G-forces to the head up to 50%; Meets FIFA Law 4, NFHS, and ASTM standards HELPS REDUCE IMPACT FORCES: Rated 5-stars by Helmet Lab, this head guard is estimated to help absorb and reduce impact forces by up to 84%; the only product shown to lower relative impact forces in a 2-year field study funded by NOCSAE and run by the University of Wisconsin–Madison COMFORTABLE & ERGONOMIC: This sleek yet heavy-duty head guard provides safety and comfort for players of all backgrounds and ages without risking performance; Ultra-light headgear that adjusts to head for optimal fit and provides 360 degree protection from bruises, cuts, and contusions; Accommodates short hair, long hair, and ponytails TRUSTED BY THE BEST: Thousands of goalkeepers and field players use this head guard, which is the official headgear of US Club Soccer; Used by youth and Premier league players PREMIUM MATERIALS: The ExoShield Head Guard is made with Team Wendy Zorbium foam padding; Slim, classic, and original styles; Available in sizes 1-6; Measure head circumference and use size chart as reference; Weighs 8 oz