The TANK™ M4 continues the evolution of this unique push sled on wheels. The core technology that makes all TANK™ models unique is that unlike resistance sleds, they can be run indoors or outdoors on any surface without gouging. Also on all TANK™ models the resistance increases the faster you push it, so each user can choose their resistance on the fly, without stopping to load or unload plates.
• Dual Variable Resistance Brakes
• No need for additional weight
• Performance Handles Included
• Built-in Accessory Tray
• Patented Technology