HeatMax ToastiToes Toe Warmers are just what you need to keep your feet warm in cold weather. These air activated toe warmers provide heat at up to 100 degrees Fahrenheit for up to 5 hours and have an adhesive backing on one side so they will stick to your sock. They provide a comfortable, form-fitting fit and they are designed for use by people who will be on the move. HeatMax ToastiToes Toe Warmers are odorless, non toxic and environmentally friendly. Package of 4 toe warmers.