Here's what other sites are saying:
Designed to be used with a basic handled ascender, the Petzl Footcord Adjustable Foot Loop provides a place to stand while you ascending fixed lines. You can easily adjust the length of the Dyneema cord, and the adjustable elastic strap keeps your foot in the loop regardless of what type of shoe you're wearing.
Petzl Climb Footcord Foot Loop C48A. Its 100percent Dyneema construction increases durability.
Features of the Petzl Footcord Foot Loop Attaches to the ASCENSION ascender for rope ascents 100% Dyneema construction increases durability Adjustable elastic keeps the foot in the foot loop with any type of shoe Plate for adjusting foot loop length Attaches directly to ASCENSION or BASIC Lightweight and compact Length is easily adjustable Webbing step is reinforced for comfort under foot
The adjustable FOOTCORD foot loop is used with an ASCENSION or BASIC rope clamp for rope ascents. Its 100 % DyneemaA(R) construction increases durability. A height-adjustable elastic keeps the foot in the loop, regardless of shoe type. Attaches to an ASCENSION or BASIC rope clamp for rope ascents 100 % DyneemaA(R) for increased durability Elastic keeps foot in loop. It is adjustable in length, so it works with any type of shoe and stores easily when not in use. Plate for adjusting foot loop length Specifications Material(s): DyneemaA(R), aluminum Weight: 40 g