TRAINING FOR SUPERIOR CORE STABILITY For carries, burpees, heavy squats, or any movements that make you feel strong, Sand Med Balls are built to help you up the ante on your workouts. They offer much needed versatility and help build core strength and stability. Built out of 1000D cordura and made to be filled with sand so that they are more portable for training on the go and home gym friendly. They can withstand constant abuse in any environment due to the multi-layer closure system and superior construction. The toughest Med Ball ever built, proudly backed by our Scars Lifetime Guarantee. Features Multi-layer Velcro Closure System with velcro & paracord lace lock-in system Internal Floating Chamber: Allows for extra stretch internally and keeps any sand from getting out Built-In Throat Funnel: Funnel expands to add sand directly into Med Ball with ease Double Pass Stitching on all seams Scars Lifetime Guarantee: The best guarantee on the market GORUCK logo Embroidery Weight embroidered on the exterior Fabric panels allow even distribution of weight when dropped Weight is suggested max, and measured using dry, Florida sand from our beaches Disclaimer, fill only with sand not gravel, also not a slambag Specs & Materials Primary Material: 1000D Cordura Throat Material: 1000D Cordura Closure Strings: Parachute 550 Cord 60LB Dimensions: 44.5" around 80LB Dimensions: 48.5" around 100LB Dimensions: 51" around