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Keep your feet warm and responsive all day with the Therm-ic Ultra Warm Performance Heated Socks S.E.T + S-Pack 1400B, a thin, expert-level heated ski sock and Bluetooth battery combo built for demanding conditions.
This Ultra Warm Performance S.E.T set pairs Therm-ic’s most technical heated ski sock with the top-end S-Pack 1400B Bluetooth batteries for long-lasting, even warmth. The thin, performance-focused knit and ergonomic cut are designed to sit smoothly in tight ski boots, giving you precise feel without bunching. Patented S.E.T heating lines run as a discreet 2 mm filament around the toes, spreading a subtle, wraparound heat rather than hot spots, ideal for full days in cold resorts or on early season missions. The merino-rich blend balances insulation, breathability and moisture management, so your feet stay drier and more comfortable as you ski. With up to 9 hours of heat depending on the setting, three adjustable heat levels and app control via Bluetooth, this bundle is ideal for expert skiers and anyone with chronically cold feet who wants reliable warmth without compromising boot fit.
Expert-level performance fit:
Thin construction and an ergonomic cut through foot, ankle and calf deliver a close, precise fit in modern ski boots.
S.E.T heating technology:
Patented 2 mm heating line runs subtly around the toes to diffuse warmth evenly rather than concentrating it at single points.
Merino blend knit:
Thermo-regulating fabric combining merino wool with technical fibres for insulation, breathability and good moisture management.
S-Pack 1400B batteries included:
Pair of compact Bluetooth batteries supplying up to 9 hours of adjustable heat for full ski days.
Bluetooth heat control:
Heat settings can be fine-tuned from your smartphone using the Therm-ic app for on-the-fly adjustment inside your boots.
Targeted for cold conditions:
Designed for expert skiers and cold-prone feet needing reliable, all-day warmth in harsh winter environments.
