Therm-ic Ultra Warm Performance S.E.T Sock

The Ultra Warm Performance S.E.T® heated ski socks are engineered for skiers who want precision, control, and targeted warmth without compromising boot fit. With a slim, technical profile, they are perfect for those who use close-fitting ski boots and value maximum responsiveness on the slopes.

At the core is Smart.Elastic.Technology (S.E.T®) – a discreet 2 mm heating line woven seamlessly into the sock to wrap the toes in gentle, even warmth. The low-profile design means there’s no added bulk, preserving your natural boot feel. A polyamide-rich construction provides a supportive, stay-put fit around the foot and leg, delivering stability through every turn and carve.

Thermo-regulating knitting techniques and naturally breathable merino wool ensure the right balance of insulation and ventilation, adapting to changes in temperature and activity level. Moisture-Vent Technology in the arch channels perspiration away via integrated micro-channels, keeping your feet dry and comfortable for long, active days on the mountain.

Benefits

• Thin heated element: 2 mm S.E.T® heating line warms toes evenly without altering boot fit.
• Performance fit: Slim construction and supportive fibers keep the sock secure during dynamic skiing.
• Temperature regulation: Merino blend with strategic knit zones for insulation and breathability.
• Dry comfort: Moisture-Vent Technology efficiently moves sweat away from the skin.

Battery Compatibility

Compatible with all Therm-ic S-Pack batteries (sold separately):

• S-Pack 700 / 700B: Up to 8 hrs heat (Bluetooth on 700B)
• S-Pack 1200: Up to 14 hrs heat
• S-Pack 1400B: Up to 16 hrs heat + Bluetooth

Choose your battery based on your skiing duration and whether you prefer Bluetooth control from your smartphone.