The Harbinger Big Grip® No-Slip Padded Lifting Strap is made of durable nylon material that is great for the serious weightlifter. The strap is designed to cushion the wrist during heavy lifting and it extends to 21-1/2", so you can wrap it around a bar several times. Dura-Grip™ rubber provides a nonslip grip and additional durability. Harbinger Big Grip® No-Slip Padded Lifting Strap