Not just for jazzercise, these Gitzo Leg Warmers technically do nothing to retain heat in the tripod legs. Rather, the warmers insulate your hand from the radiated cold temperature of the tripod tubing when shooting in cold climates.
Additionally, this closed-cell foam tripod accessory acts as a cushioned buffer when hoisting a camera and tripod on your shoulder for extended periods, all while protecting the tubes from impact and scratches.
