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HEAT 4.1 Socks 2026 green/orange incl. LITHIUM RCB 2000 Pack
HEAT 4.1 Socks 2026 green/orange incl. LITHIUM RCB 2000 Pack

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

EUR 2026-02-20
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 2000 Pack
The Lenz Body heat system warms the body from head to toe. The lithium pack rcB 2000 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 2000 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 lithium pack
- The lithium pack is connected to the respective product with snap buttons
- Heating output can be controlled with the free smartphone app (9 heating levels) or directly on the lithium pack (3 heating levels).
- small, light (approx. 115 grams) and compact
- Charging cable with USB-C connection
- convenient charging in the charging cradle
- Also compatible with charger from rcB 1200, rcB 1800 and heat pack
2100003759368 1065-green/orange-1350 2100003759368
299,90 €
Save 16% 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 2000 Pack
The Lenz Body heat system warms the body from head to toe. The lithium pack rcB 2000 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 2000 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 lithium pack
- The lithium pack is connected to the respective product with snap buttons
- Heating output can be controlled with the free smartphone app (9 heating levels) or directly on the lithium pack (3 heating levels).
- small, light (approx. 115 grams) and compact
- Charging cable with USB-C connection
- convenient charging in the charging cradle
- Also compatible with charger from rcB 1200, rcB 1800 and heat pack
- Show more -
Product number 2100003759368
Color green
Gender Unisex
Materials 50% Polyester, 33% Polyamid, 10% Merinowolle, 7% Elasthan
Release year 2026
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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