MAS GRIT have two different styles of sleds. You can purchase either "The Elijah" (sprinter sled) or "The Elijah 2.0" (push/pull). The sprinter sled "The Elijah" is to 100 kg plus, is designed more for sprint training as the athlete wears a harness and tows the sled whilst running, However "The Elijah 2.0" (push/pull) sled is designed for extra heavy loads. Our sleds are designed to build muscle, gain leg strength and endurance. They do this by their design where the load is focused on the legs and lower half of the athlete. The GRIT SLEDS are built tough to last the long haul. Fabricated and designed by professional athletes the use of these sleds will increase your leg strength and power profoundly.