Descriptions The Micro Strap acts as a seat belt for the feet. We highly recommend 1 strap per pad. If you purchase the base unit Micro, we recommend that you purchase 2 straps; if you purchase the Micro #5 (BU + Front & Back Handles + Rear Platform), we recommend 3 straps. (The Micro Fully Loaded will already include 3 Micro Straps.) Straps will prevent you from losing traction and possibly falling off the Micro. Straps are used for exercises like SUPER CRUNCH, SKATING, STANDING OUTER THIGHS, REVERSE CATFISH, and more. It also improves tra