The Petzl FOOTAPE Adjustable Webbing Foot Tape is used with the ASCENSION handled ascender for rope ascents. This foot loop comes in "handy" when you are trying to ascend yourself up. This helps your upper body out so you do not tire as quickly. The FOOTAPE can fit any boot type with its DoubleBack buckle. Features: Attaches to the ASCENSION ascender for rope ascents Underfoot strap is abrasion-resistant and is slightly rigid to make it easier to step into? Adjustable elastic keeps the foot in the foot loop with any type of shoe Mini DoubleBack buckle easily and quickly adjusts length of foot loop Model# C47A