Foot Warmer Insoles for Shoe Size 35–40, 20 Pack, 8+ Hour Operating Time

Self-activating foot warmer insoles bring steady heat to cold feet in shoe sizes 35-40. Simply take a thermal insole out of the package, give it a gentle shake and it warms up in approx. 10-15 minutes, then keeps going for 8+ hours. No batteries, no charging, no fuss.

• Activates by itself when removed from the package and gently shaken, with no cables or batteries needed
• Delivers a comfortable average temperature of approx. 45 °C, peaking at a maximum of 55 °C
• Keeps feet warm for 8+ hours, long enough for a full day outdoors or at work
• Fits shoe sizes 35-40, slipping inside your usual footwear
• Includes 20 heated insoles in one pack for a whole season of cold mornings

Cold feet can ruin a winter walk, a day in the stands or a long shift outside. These thermal insoles sit inside your shoes and warm up within approx. 10-15 minutes after opening. With 20 insoles in the pack, you can keep a few in the car, the backpack and the jacket pocket so warmth is always close at hand. Stock up before the next cold snap.

• Type: thermal insole for feet
• Activation: heats up when removed from the package and gently shaken
• Heat-up time: approx. 10-15 minutes
• Operating time: 8+ hours
• Maximum temperature: 55 °C
• Average temperature: approx. 45 °C
• Fits shoe sizes: 35-40
• Package contents: 20 heated insoles