Instant cold packs by Dynarex are a proven solution to relieve of minor pain, swelling, sore joints, nosebleeds and sprains. These are ready-to-use cold packs and do not require freezing. Our cold packs are highly effective in reducing swelling and their flexible material allows reaching difficult body contours with easy. Just a single squeeze activates the pack providing immediate relief to the injured area. The Dynarex cold pack is conveniently packed to be portable enough and makes a great travel first-aid kit element. It is mostly recommended for use by athletes and those who are involved with heavy machinery tasks.