FreezerKnee cold pack wraps, 2 pack4.4 · 4,223 ratings
$35.95for the pack of 2

Two gel inserts and an adjustable wrap cover the lower back and tailbone area. We shape these inserts to stay pliable down to -13 F and line them with nylon fabric. Place one insert in the freezer for 2 to 4 hours, slide it into the sleeve, and secure the two long straps around your waist, hip, or torso while the spare insert chills.
FreezerKnee cold pack wraps, 2 pack
FreezerJaw cold wrap with four gel inserts
FreezerContoured ankle cold pack with strapBack cold packs with waist belt, 2 pack