Chicken loops are very simple, yet incredibly versatile. They work great for organizing your gear (i.e. biners/daisy chains/etc.) and are a great attachment point for dragging your pack or even getting you out of a hole. Their primary use, of course, is for helping to hold the foot ascender close to your boots while vertical caving, and to keep that footloop from coming off.. Chicken Loops are great accessories that really complete your cave outfit. Three sizes available; choose your size by measuring around your ankle and heel as shown. Your chickenloop must be larger than this measurement or it won't fit around your foot. Too large is generally not an issue; you want it to be fairly loose, but not falling down around your heel.