ORGANIC COTTON CASTOR OIL PACK: Each caster oil patch set contains 30pcs organic cotton castor oil pack. Its soft, absorbent, and hypoallergenic properties ensure a snug and irritation-free fit, making it ideal for sensitive skin while offering superior breathabilityCASTOR OIL PACK is designed to help you get through your day with relief from pain in the waist, neck, back, arms, and calves. Its perfect for relaxing muscles, improving circulation, and helping you get a better nights sleepwhether youre at home or on the go. Please note oil not includedVERSATILE SIZE FOR EVERY NEED: 6.9"x7.87": Ideal for your liver, waist, back; 3.94"x4.7": Great for your neck, arms, knees, or calves; 3.54"x3.54": Perfect for wrists, feet, and small areas; 3.15"x3.15": Designed for joints, arches, and other targeted spots. With flexible fabric, the packs will bend with your movementsSIMPLE & CONVENIENT TO USE: Each set includes 30pcs easy-to-apply packs. Simply remove the protective film, apply the castor oil to the cotton side, and stick the pack to the area of discomfort. You can leave it on for an hour or ideally overnight for maximum reliefSMART, ADHESIVE DESIGN: The self adhesive castor oil pack wrap are easy to use, featuring a soft organic cotton inner layer, a middle anti-leakage film, and an outer flexible fabric. With a 2 mm thick cotton layer that absorbs up to five times its weight, youll enjoy mess-free, targeted relief