Chest Expander, Lmell Professional Adjustable Strength Chest, Lmell 5 Tube Resistance GiftMATERIALE The natural rubber made resistance band tubes, which wont hurt you while exercising. They are aging resistance, long durability, well tensile strength, good elasticity, and no pungent odor. .ADJUSTABLE with Lmell 5 adjustable resistance springs available, it is convenient to choose resistance you want. .BENEFITS Training your arm, chest, shoulders, back, your whole upper body. .HIGH QUALITY Elastic high strength spring, durable. with Lmell steel coil pull-up bar and non-slip PU handle with Lmell high density, very effective for building your body. .ERGONOMIC DESIGN Ergonomic handles offer a comfortable grip, effectively preventing hand slippage. .