Nothing can prepare you for the brutal carnage you will experience with a 100 lb. V-Max weighted vest workout. We strongly recommend this vest be used by advanced and professional athletes. Every detail of reinforcement and workmanship is designed to give you years of grueling workouts. The exclusive, inter-skeletal webbing reinforcement is critical for carrying the goliath weighted-matrix smoothly and evenly across the torso. The 1000 D-Cordura main-body and lining give you the toughest nylon material available from Dupont. We use 7/16" foam padding under the lining and 1" thick foam pad in the shoulders. We add 3" poly belt-webbing reinforcement in the shoulders to carry the full 100 lbs. securely without ever ripping out.