The TANK M1 is not your average push sled. Unlike traditional friction sleds that require heavy weight plates and can damage floors, the TANK M1 uses Mag-Force™ Resistance Technology to deliver a progressive workout on any surface. Whether you're pushing, pulling, or sprinting, this all-surface sled automatically increases resistance as you push harder, helping you build power, endurance, and explosive speed—right from your home gym, garage, or backyard.