Build explosive upper body strength and tone muscles its's a really good alternative to normal pull ups. Will take your body to the next level and is portable, lightweight and compact with easy adjustable 4.8m nylon straps. We suggest you use with weighted vest for more intensive training. Maximum user weight: 100kgs. Gymnastic rings for upper body strength and bodyweight exercising, suspension training. A really good alternative to normal pull ups. Portable, lightweight and compact. Easy adjustable 4.8m nylon straps.