Premium and Reliable: The chest expander is made of quality spring steel material, which is high tensile strength, Eco friendly, sturdy, and sturdyCompact and Handy: Lightweight, simple structure is easy to be taken to the office, gym, camping or traveling, doing exercise anywhereUpper Body Exercise Equipment: Spring power twister bar can train arms, chest, shoulders, back, and your whole upper bodyErgonomically Design: Nonslip handle provides you with a more comfortable grip, and keeps you preventing your hand from falling off the chest exerciser, giving you maximum resistance throughout the exerciseSuitable People: Upper body exercise is suitable for young, adults, beginners, exercisers, and trainers Specification: Material: Spring Steel Size Chart: 58cm/22.83inch Package Includes: 1Spring Power Twister Bar Note: Please allow slightly errors due to manual measurement and different monitors.