SKLZ SpeedSac Variable Weight Sprint Trainer Sled Trainer SKLZ This Training Cable is completely

This Training Cable is completely compatible with all Slide-Lock components

Sliding rail sternum straps

The maximum grip pattern gives you exceptional control while the seamless design creates a consistent

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SKLZ SpeedSac Variable Weight Sprint Trainer Sled Trainer SKLZ This Training Cable is completelyBuild explosive leg drive and speed right of the blocks with the SpeedSac. This variable weight sled allows you to strengthen your lower body muscles by resistance training similar to metal sleds. With removable weights, the SpeedSac allows you to adjust the towing resistance. You can also use the handles on the bags to perform various upper and lower body exercises such as lunges or front raises. Note: Only use on grass, turf or wood surface. Use on