Wireless Remote Control: Customize your comfort with ease. Choose from three temperature modes (low, medium, high) for personalized warmth at your fingertips (113°F to 149°F).Versatile Fit, Trim-to-Size: Suitable for both men and women, trim these insoles for a perfect fit in any shoe or boot. Ergonomic design with ventilation holes ensures optimal air and heat distribution (S: 5-8cm, L: 9-13.5cm).Long-Lasting Rechargeable Battery: Crafted with plush EVA foam for enduring comfort. The 3.7V 3500mAh battery provides 10+ hours of continuous warmth, ideal for outdoor activities.Perfect for Winter Adventures: Ultra-fine heating panels beneath the toes warm up quickly. Designed for extreme cold weather activities like hunting, skiing, snowboarding, and more.iHeat Lifetime Support: Package includes 2x rechargeable heated insoles, 1x wireless remote control, 1x charger, and 1x manual. Rigorously tested and made with care. Enjoy US-based customer service (Phone & Email) 7 days a week.