11 HOURS OF LONG-LASTING HEAT - Prevent frozen fingers from interrupting your outdoor activities or workday. Whether you’re at a football game, skiing down the slopes, or spending hours outside working, these heat packs for hands deliver up to 11 hours of long-lasting warmth! DURABLE - Tired of bulky hand warmers in gloves making them feel too tight? These disposable heat packs are designed to fit comfortably in your gloves or in pockets without adding bulk, so you can stay warm without giving up comfort. EASY AIR ACTIVATION & RE-ACTIVATION - Heading out for a long day in the cold? Just open a hot pack, shake it, and let the air activate the heat within 15-30 minutes. If the effectiveness wears off, give the pocket warmers another quick shake and expose to air again to reheat! NATURALLY SKIN SAFE & TSA APPROVED - Made from all-natural ingredients, these bulk hand warmers are safe for your skin and safe enough to take with you wherever you go. Even on airplanes. Just toss them in your travel bag and be prepared to stay warm on your winter trips. PORTABLE CONVENIENT WARMTH - Includes 40 pairs of warmers in a bulk pack of 80. Perfect for cold weather activities like tailgating, hiking, camping, cycling, jogging, skiing, snowboarding, hunting, fishing, outdoor sports events, and for anyone working outdoors, commuting in icy winters, or even for a fun kids' snowball fight!