The Seirus Thick N Thin Headliner combines an ultra-thin Thermax hood with a Polartec® micro-fleece neck-up in one 4-in-1 package that slips under ski, bike, or climbing helmets to block wind and lock in heat; flat-seam construction eliminates chafe while the four-way stretch fabric breathes during high-output ascents—ideal for cold-weather runners, skiers, and cyclists who need lightweight, packable warmth that adjusts on the fly.
Features:
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4-in-1 design: hood, neck-up, face mask, or headband in seconds
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Thermax® hood wicks sweat and dries fast during aerobic efforts
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Polartec® micro-fleece neck-up adds soft, breathable insulation
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Flat-lock seams prevent helmet-pressure chafing on long days
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Four-way stretch fabric fits heads 20–24 in without compression marks
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Weighs 2 oz—packs into jacket pocket when temps rise
Common Q&A’s:
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Will the fleece neck-up fog goggles?
Thin micro-fleece channels breath downward; pull hood below nose to further reduce fog. -
Can I wear just the neck-up without the hood?
Yes—hood tucks inside neck gaiter for beanie-only or neck-up-only wear. -
Is this layer warm enough for 0 °F skiing?
Pair with a shell hood for sub-zero wind; alone it handles 10–35 °F aerobic activity.
- Age Group:
- Adult
- Gender:
- Unisex
