XM ADJUSTABLE WEIGHT / SPEED SLED Magnetic Resistance you should never use them

you should never use them as a resistance tube or bungee

Premier Series - T1201 - 2009 - Black (TM371B)

while the anti-roll shape keeps them steady between sets

PATENT PENDING

Commercial seat carriage with 2″ polyurethane rollers for smooth and precise motion

XM ADJUSTABLE WEIGHT / SPEED SLED Magnetic Resistance you should never use themOur portable and versatile speed training sled is perfect for building explosive speed and leg drive! Strengthen your lower body with the adjustable speed sled and replace the old bulky metal sled. Includes: 6 x heavy duty sandbag shells. (use sand or crumb rubber) Adjustable waist harness with Velcro and 3 belt loops. With a 70 strap included. 27. 5 Sled Length