WODFitters Reusable Hot Cold Therapy Pack - Ice Pack for Recovery and for Minor Injuries - Upper Back, Rotator Cuff, Shoulder, Knee and Other Injuries - With Carrying Bag and (2 Pack) Recover in style after the toughest WODs with the Aqua Pearl WODFitters Hot and Cold Therapy Packs! 7-1/2" x 4-1/2" x 1/2" - 2 packs - red and black - come in a carrying bag, so it is easy to transport to and from the gym. These reusable pain relief packs are Freezer and Microwave safe. Put them in the freezer when you start your WOD and have it ready right after. Ice bags can keep you cool after your workout and help your sore muscles recover faster. Like a mini ice bath after Murph! Saves you a trip to a chiropractor. If you need heat therapy, they work just as well, just put them in the microwave and you are good to go!