Sidas Foot Warmer — these innovative foot warmers come in the form of insoles that keep your chilly feet toasty. They start warming up as soon as they hit the air. Super slim and versatile, they fit all types of footwear and are perfect for any outdoor adventure. With four different sizes, you're guaranteed a snug fit, and the adhesive backing keeps them securely in place no matter what you're up to. Enjoy up to 8 hours of warmth right after you break the seal on the packaging.

Features

• Provides up to 8 hours of heat
• Activates upon exposure to air
• Odor-free
• Eco-friendly, made from natural ingredients
• Self-adhesive surface keeps insoles stable