INSTANT RELIEF - NO FREEZER NEEDED! Just squeeze the center of the flexible ice pack to activate the single use disposable bags to make them as cold as ice. Apply cold packs to injury to reduce swelling, inflammation and pain for about 15 minutes per bag. FIRST AID KIT ESSENTIAL - Each pack measures 4.5" x 6" making it ideal for most common sports injuries and body parts including: ankle, elbow, head, neck, shoulder, hip, foot, wrist, knee, calf and the perineal area. Add it to your household or car first aid kit for instant relief always on hand. BULK SAVINGS FOR EVERYONE - Enjoy our 100 count bulk savings pack and save BIG compared to your local pharmacy, sports retailer or big box store.