The ARMA Hot/Cold Relief Boots offer versatile therapeutic treatment ligaments and tendons of the lower leg. Comfortable neoprene, bound edges and touch close straps allow for a secure, supportive fit. Gel packs secure with touch close fastenings. Replacement gel packs available separately. Suitable for use on front and back legs. Heat in hot water or microwave. Cool in cold water or freezer. Sold in pairs.