Dangerously Fit sandbags are the ultimate training tool for full body strength and conditioning… perfect for home workouts and more than tough enough for commercial use or outdoor group training. The exterior bag and filler bags are made from the rugged Nylon Cordura material, Nylon Cordura is made with high tenacity air jet textured nylon that has been tested in the world’s toughest environments not to tear, stretch or break. The bag in enclosed with sturdy YKK zips, sealed with double nylon stitching and heavy duty military grade velcro to secure the inners and ensure the filler bags are kept in place. The filler bags are fitted with double velcro roll down seals that are easy to fill whilst providing a secure leak-free seal keeping the sand safely inside the bag. The filler bags are considerably smaller than the exterior bag so the center of mass shifts within the bag maximising the unstable properties of training with sand. The sandbag is highly versatile with 7 reinforced lifting handles providing multiple grip positions giving you the option to push, pull, swing, carry and throw the bag in plethora of ways. The handles are made from strong ribbed hardened plastic giving your grip the required stiffness at the point of contact to perform your lifts comfortably. Dangerously Fit Sandbags are built to last and are ready for anything!