Polartec Alpha Direct Quilt Liner
Black Alpha 90
$114.95
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Polartec Alpha Direct Quilt Liner
$114.95
⏳ Made to order — ships in ~2–4 weeks
Polartec Alpha Direct does something most insulation can't — it actively regulates temperature instead of just trapping heat. Built with the same technology trusted by mountain guides and ultralight thru-hikers, it breathes when you run warm and insulates when you don't — so you stop waking up sweaty at 2 am. Whether you're pushing your sleeping bag into shoulder-season territory or heading out on a warm-weather overnight with nothing but this, it's the layer that earns its weight.
What makes it different
Polartec Alpha Direct skips the shell fabric entirely — the insulation is the surface, designed to sit directly against your skin. That means less bulk, faster drying, and a next-to-skin softness you won't find in a standard sleeping bag liner. Unlike other fabrics that go clammy when temperatures and humidity climb, Alpha Direct stays soft and dry against your skin — no sticking, no cling, no matter how muggy it gets. Use it as a standalone summer quilt on warm nights, a versatile camping liner for any sleep system, or a packable backpacking liner that pulls its weight on thru-hikes, weekend trips, and nights at home alike. Trail Tested. Couch Approved.
How to use it
- As a sleeping bag liner: Adds 5–15°F to any 3-season bag, extending your system deep into shoulder season
- As a quilt liner: Pairs with any backpacking quilt to extend its warmth range without the bulk of a heavier bag
- As a summer quilt: Standalone warmth rated to 50–60°F — ultralight, packable, ready for warm-weather camping
- For backpacking and thru-hiking: At 8–12 oz, it earns every gram without adding bulk to your kit
Choose your weight
| Model | Weight | Standalone Comfort | As a Liner Adds |
|---|---|---|---|
| Alpha Direct 90 | 8 oz | ~60°F | 5–10°F |
| Alpha Trail 90* | 8 oz | ~60°F | 5–10°F |
| Alpha Direct 120 | 12 oz | ~50°F | 10–15°F |
*Alpha Trail 90 features two-way stretch and packs even smaller than the Alpha Direct 90.
Specs
- Material: Polartec Alpha Direct Fleece
- Dimensions: 72" long × 55" wide
- Foot box: 15" circular, sewn-in
- Packed size: 10" long × 4" diameter cylinder
- Made in Pennsylvania 🇺🇸
Want to push your liner into shoulder-season territory? Add the Windproof Shell — 2.9 oz of Argon 67 that blocks wind and light moisture, extends your effective warmth range by several degrees, and packs down to nothing.
⚠️ These sell out as fast as we make them. Place a backorder now to reserve yours from the next production run — we'll ship it the moment it's ready.