Ideal for narrow feet. The toe area and ball of the foot are heated. Optimum moisture transport. Ergonomically knitted. Additional shin protector. Cushioning of exposed areas. Ring bandages for optimum grip on the foot. Simple fastening of the lithium packs via press studs on the cuff. Machine washable up to 30°C. Light lithium packs fit all models of Lenz heat socks, heat vest, heat bandage, and LED system. Attach the lithium pack to the waistband of the sock with snap fasteners. Heating power adjustable via three steps on the lithium pack. Heating power infinitely variable via smartphone (Bluetooth Smart Ready) remote control. Heat development up to 14 hours. Global USB charger with charge indicator. Short loading time. Flexible plastic cover. Package contents: 2 lithium pack rcB 1200 (rechargeable), 1 Global USB charger 100 - 240 V, 1 USB charging cable with charge indicator, and 1 pair of Lenz heat sock 5.0 toe cap.