The patented Toe Cap® heating element guarantees all-round warmth and heats the toes from above and below. The heat sock 5.1 toe cap slim fit knee socks are ideal for narrow feet and legs.

They are ergonomically knitted for an optimal fit and the ring bandage offers a comfortable hold on the foot. Shin protectors and other reinforcements on the toes and heels prevent pressure points.

The skin-friendly material mix of merino wool and silk is breathable, quick-drying and comfortable to wear.

The light, rechargeable lithium pack battery can be purchased as an option and is barely noticeable under the special comfort cuff. The heat can be controlled directly on the lithium pack or via the free Lenz heat app on the smartphone.