Product description: What are the advantages of our products compared with other products in the market? First of all, a solid mountaineering buckle is integrated, which is very durable. Secondly, the bidirectional arc buckles are easy to operate, firm and stable. The backstrap is widened to make exercise more comfortable. resistance bands are great for building stamina and stronger hip flexors when doing sprinting movements. It can be also used in swimming,and it is great for resistance training. you can use it for parachute drills, and pulling regular car tires for mid body resistance. Features: •High quality durable nylon, used by professional sports teams or team competitions Shoulder sponge layer design to avoid shoulder damage. •Belts and shoulder straps to meet a variety of different training methods. Specification: Product size: pp band: 10 feet and 6.6 feet optional, the longest stretch can reach 30 feet and 20 feet. Measured tension: 50lb. Elastic rope material: latex Applied environment: lawn or sand or indoor Product weight: about 1.2kg Package includes： 1X Elastic rope(10ft/6.6ft) 1 x Shoulder strap 1 x Belt 1X Handle