Stock up and save with our bulk offering of Grabber Adhesive Toe Warmers. We';ve got you covered, whether you';re organizing a cold weather event or making sure your employees are warm in cold conditions. Each pair lasts 8 hours and provides fast heat that doesn';t need to be recharged or reheated. They';re safe to use, convenient to pack in a backpack or toolbox and can be disposed of with regular trash. Grabber Warmers are made with natural ingredients that don';t harm the environment and have a 4 year shelf life if stored in a cool, dry place. �Warmer Features:Ready to useAdhesiveAir activatedSafe, natural heatHeats up 15-30 minutes after openingSafe to dispose of with regular garbage; ingredients will not harm the environment320 pair of warmers per caseTSA approvedWarmer Specifications:Duration: 8 Hours (Actual duration depends on usage and storage conditions)Weight: 0.053 lbs (24 g)Dimensions: 3.94in x 4.81in (10 cm x 12.2 cm)Average Temperature:� 97 F (36 C)Maximum Temperature: 115 F (46 C)Ingredients: Iron, water, vermiculite, charcoal, polymer & saltCountry of Origin: USA