flexikold gel neck ice pack w/straps (23" x 8" x 5") - reusable cold pack compress (therapy for pain, injuries of neck, back, shoulder, knee, foot) - 6301 cold-strap by natracure natracure colder for longer: proprietary gel cold pack stays colder for longer than competing products that use inferior bentonite formulations. soft, flexible insulating layer enhancing cold therapy.