... 2. For different body parts protection 3.provide support, stability, and comfort 3pcs in one pack (magnetic knee strap, magnetic wrist support, ... magnetic back belt) Power Magnetic 3-Pack magnetic Knee Strap, Wrist Strap As seen on TV, will provide support, stability, and ... in a contoured shape. Perfect for backache, abdomen and hips.3) Magnetic Wrist Wrap is a wrist wrap with hook & loop fastener ...