Replacement Velcro straps for Keka Design Arm Guards. Four replacement straps per pack. Match strap size with arm guard size. For reference, size Small straps are found on the XS-7" (not sold at Race Werks) and S-8" Keka Arm Guards. Size M/L straps are found on the M-9", L-10" and XL-11" Keka Arm Guards.