Used frequently in Powerlifting and in resistance training, these sturdy bands are great for bodyweight training and enable a progressive load to be added safely to barbell ends. Durable, seamless latex rubber ensures you’ll never risk snapping when loaded correctly. Resistance: 13mm = 5-35lbs (2-16kg). 22mm = 10-50lbs (4-23kg). 32mm = 25-80lbs (11-36kg).