Shopeleven Sit-Up Assistant Device for Abs, Core Strength with toning tube Sit-up Bar(Black)
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Sit-up machine can adjusts to three different gears for any foot size by flexible spring buckle, helping to hold your feet in place during exercise. Sleeted super-elastic wear-resistant eco-friendly foam material, comfortable and safe, protect the instep from pain, as well as not hurt your foot.
