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No more freezing with the patented Toe Cap® technology. The flat, sewn-in heating element is not bulky and provides all-round warmth for the toes - up to 14 hours.
The fit in the calf area is ideal thanks to the increased elasticity. The socks are therefore also perfectly suitable for stronger calves and thanks to the comfort cuff nothing slips. The knee-high heat sock 5.1 toe cap® has an integrated shinbone protector as well as protectors in the toe and heel area. Thanks to the ring bandage, the socks do not slip on the foot.
The well thought-out material mix of merino wool, silk and functional fibers dries quickly and efficiently wicks away moisture.
The rechargeable lithium pack can be attached to the sock waistband with snaps. The heat socks are compatible with all lithium packs of the Lenz Body Heat System.
The temperature can be conveniently controlled on the smartphone with the free Lenz heat app or directly on the lithium pack.
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Heat Our heated products are available with permanently installed and flexible heating elements. The heating elements heat the products in different places using a battery, perfect for cold days. More information |
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Merino SoftTec® This material combines the natural warmth, breathability and hygiene of merino wool with high-tech fibers. It offers a scratch-free feel and is particularly suitable for outdoor sports activities. More information |
No more freezing with the patented Toe Cap® technology. The flat, sewn-in heating element is not bulky and provides all-round warmth for the toes - up to 14 hours.
The fit in the calf area is ideal thanks to the increased elasticity. The socks are therefore also perfectly suitable for stronger calves and thanks to the comfort cuff nothing slips. The knee-high heat sock 5.1 toe cap® has an integrated shinbone protector as well as protectors in the toe and heel area. Thanks to the ring bandage, the socks do not slip on the foot.
The well thought-out material mix of merino wool, silk and functional fibers dries quickly and efficiently wicks away moisture.
The rechargeable lithium pack can be attached to the sock waistband with snaps. The heat socks are compatible with all lithium packs of the Lenz Body Heat System.
The temperature can be conveniently controlled on the smartphone with the free Lenz heat app or directly on the lithium pack.
Heated socks feature an integrated heating system that specifically warms the toe area. In Lenz socks, a flat Toe Cap® heating element is embedded directly into the fabric, heating the toes evenly from top and bottom. For operation, a battery is attached externally to the shaft. The heat levels can be controlled manually or via the Heat App. Heated socks thus provide a reliable source of warmth – ideal for cold weather, winter sports, or long outdoor stays.
Lenz heated socks are easy to care for and washable at 30 °C on a gentle cycle – without the battery attached. It is recommended to wash them in the included laundry bag and air-dry afterward. Do not use fabric softeners or tumble dry to maintain the functionality and lifespan of the heating elements. Heated socks should also not be hand-washed.
The Heat Sock 5.1 Regular Fit is tailored to a normal foot shape and is the all-rounder among the models. While the Slim Fit version is designed for narrower feet and the Compression models target high-performance and professional use, the Regular Fit offers a balanced cut for versatile applications. Additional padding on the shin, instep, and sole provides comfort and even pressure distribution.
Heated socks in regular fit feature the proven Toe Cap® technology, which ensures even heating of the toes from top and bottom. This guarantees constant warmth even in sub-zero temperatures. The heating element is fully integrated into the sock and barely noticeable.
The sock consists of a functional fiber blend containing merino wool, elastane, and silk. This makes it breathable, quick-drying, and pleasantly soft on the skin. At the same time, the sock remains shape-stable and durable even after many washes – ideal for an active lifestyle.
Yes – thanks to the padding and flexible fit, heated socks in regular fit are also suitable for longer walks, commuting, or leisure activities. The socks are suitable for both sport and casual use. They fit into regular winter boots or sneakers. For people with cold feet in daily life, they are a comfortable solution.
Lenz provides a detailed size chart to guide you before purchase. The regular fit is designed for classic foot shapes and is neither too tight nor too loose. Thanks to the elastic material, the sock adapts well to the foot without slipping.
Depending on the heat setting and battery model, battery life ranges between 3.5 and 23 hours. The highest setting is suitable for short, intense cold exposures, while the low setting can provide all-day warmth. For those frequently outdoors, spare batteries allow flexible use at any time.
Yes, with the free Lenz Heat App, you can conveniently control Bluetooth-compatible batteries on your smartphone. The app offers nine heat levels, an interval function, and battery status display. This is particularly useful when you want to flexibly adjust the warmth on the go – e.g., in a chairlift or on the slopes.
The batteries are not included with this product and can be purchased separately.
Size chart
Heating times
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