[U.S. Patented / Good Design Award] VRTX Fitness Band - Hard to break, gentle on the skin, fully washable, high strength, pull-up support

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Material: ‎U.S. patented material (blended material of cloth fiber and rubber fiber)
Tension: ‎5-14 kg (2-3 times (resistance when stretched)
Product size: ‎103.8 x 2.5 x 0.1 cm; 140 g