530 Size: Medium (6" x 9") Features: -Cold comfort system.-Removable cold packs have a patented non-toxic fill which freezes quickly.-Retains cold longer than conventional ice packs.-Soft and flexible even fully frozen.-Mold smoothly around body curves and painful areas.-Comfort flex elastic strap holds the cold therapy in place for convenience.-Provides gentle compression to help alleviate pain and swelling.-Stay put holster has an insulated cover that prevents drippy condensation.-Helps to keep packs cold even longer.-Made in the USA.