Jump to web page content
HEAT 4.1 Socks 2026 green/orange incl. LITHIUM RCB 1800 Pack
HEAT 4.1 Socks 2026 green/orange incl. LITHIUM RCB 1800 Pack

LENZ HEAT 4.1 Socks green/orange incl. LITHIUM RCB 1800 Pack

EUR 2026-03-23
HEAT 4.1 Socks
The sewn-in heating element in the heat sock 4.1 toe cap® provides warmth and keeps the feet warm. The toes are warmed both from above and below. The fit in the calf area is ideal thanks to the increased elasticity. The socks are therefore also perfect for stronger calves and nothing slips thanks to the comfort cuff.
The socks are knitted left/right and promise a perfect fit thanks to the ring bandage. Padded reinforcements protect the toes and heel. Natural merino wool combined with technical fibres absorbs moisture and keeps you warm.
The comfort cuff with press studs fixes the lithium pack. This can be purchased as an option with the heat socks. It is operated either at the touch of a button on the lithium pack or with the free smartphone app.

Features:
- Toes are warmed by the Toe Cap® heating element from both above and below
- Sewn-in heating element provides warmth and keeps your feet warm
- improved elasticity in the calf area
- Socks are knitted and purled
- Elasticated arch and padded reinforcement
- Natural merino wool combined with technical fibres
- Machine washable at 30 degrees
- Comfort cuff with snap fasteners to fix the lithium pack in place.
- Can be combined with all Lenz lithium packs

LITHIUM RCB 1800 Pack
The Lenz Body heat system warms the body from head to toe. The lithium pack rcB 1800 can be used for all models of the Lenz heated socks, heated vest, heated bandage, heated gloves, heated pants and the LED system.
The lithium packs are connected with push buttons. The lithium packs are small, light and provide up to 20 hours of heat at the touch of a button for work, sports and leisure.
This increases the ability to perform and concentrate, even in cold temperatures, and ensures that blood circulation is maintained.
The lithium packs rcB 1800 can be controlled directly on the lithium pack. With the Lenz heat app, however, the heat can also be regulated continuously via smartphone. Optimal when the lithium packs are under several layers of clothing.

Features:
-rechargeable
-Heat generation of up to 20 hours
-lithium pack is connected to the respective product with push buttons
-Heating power manually adjustable on the lithium pack or infinitely variable via Lenz heat app
-small, light (95 grams) and compact (8.5 cm x 5.5 cm x 1.5 cm)
-Charging cable with USB connector
2100003743084 1065-green/orange-1340 2100003743084
279,90 €
Save 14% now!
Sizetable Sizetable
HEAT 4.1 Socks
The sewn-in heating element in the heat sock 4.1 toe cap® provides warmth and keeps the feet warm. The toes are warmed both from above and below. The fit in the calf area is ideal thanks to the increased elasticity. The socks are therefore also perfect for stronger calves and nothing slips thanks to the comfort cuff.
The socks are knitted left/right and promise a perfect fit thanks to the ring bandage. Padded reinforcements protect the toes and heel. Natural merino wool combined with technical fibres absorbs moisture and keeps you warm.
The comfort cuff with press studs fixes the lithium pack. This can be purchased as an option with the heat socks. It is operated either at the touch of a button on the lithium pack or with the free smartphone app.

Features:
- Toes are warmed by the Toe Cap® heating element from both above and below
- Sewn-in heating element provides warmth and keeps your feet warm
- improved elasticity in the calf area
- Socks are knitted and purled
- Elasticated arch and padded reinforcement
- Natural merino wool combined with technical fibres
- Machine washable at 30 degrees
- Comfort cuff with snap fasteners to fix the lithium pack in place.
- Can be combined with all Lenz lithium packs

LITHIUM RCB 1800 Pack
The Lenz Body heat system warms the body from head to toe. The lithium pack rcB 1800 can be used for all models of the Lenz heated socks, heated vest, heated bandage, heated gloves, heated pants and the LED system.
The lithium packs are connected with push buttons. The lithium packs are small, light and provide up to 20 hours of heat at the touch of a button for work, sports and leisure.
This increases the ability to perform and concentrate, even in cold temperatures, and ensures that blood circulation is maintained.
The lithium packs rcB 1800 can be controlled directly on the lithium pack. With the Lenz heat app, however, the heat can also be regulated continuously via smartphone. Optimal when the lithium packs are under several layers of clothing.

Features:
-rechargeable
-Heat generation of up to 20 hours
-lithium pack is connected to the respective product with push buttons
-Heating power manually adjustable on the lithium pack or infinitely variable via Lenz heat app
-small, light (95 grams) and compact (8.5 cm x 5.5 cm x 1.5 cm)
-Charging cable with USB connector
- Show more -
Product number 2100003743084
Gender Unisex
Materials 50% Polyester, 33% Polyamid, 10% Merinowolle, 7% Elasthan
Color green
Release year 2026
Manufacturer Information Show Manufacturer Information
- Show more -
- Show more -
LENZ
Lenz is a brand distinguished by its innovative heating systems and functional clothing. The heated socks and gloves, which can be controlled via the Lenz Heat App, allow for real-time adjustments, providing outdoor athletes with optimal comfort even under extreme conditions. Lenz combines ergonomic design with high-quality materials to ensure maximum functionality and durability. Their products are perfect for winter sports enthusiasts and outdoor adventurers who rely on reliability and state-of-the-art technology. Lenz places great importance on sustainability and continuous product improvement to meet user needs. By uniquely combining technical innovation with thoughtful design, Lenz consistently remains at the forefront of the functional clothing industry.
Show Manufacturer Information