Alpha 90 1/4-Zip Hoodie
Alpha 90 1/4-Zip Hoodie
Ready to shipShips in 1–3 business days
Ordering ready-to-ship with made-to-order or custom items? We ship everything together once it's all sewn.
Wide: roomier, roughly men's fit. Narrow: trimmer, roughly women's fit.
Our size charts are garment measurements, not body measurements. See the size chart
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Made in the USA · Free shipping over $130 · 30-day returns on ready-to-ship
Fit & sizing
Fit & sizing
Wide: roomier, roughly men's fit. Narrow: trimmer, roughly women's fit.
Our size charts are garment measurements, not body measurements.

Fabric & care
Fabric & care
Features
Breathable: Releases moisture vapor to keep you dry.
Lightweight: Delivers warmth without added bulk.
Warm: Traps air for reliable insulation in cold conditions.
Quick-Drying: Wicks moisture and dries fast to keep you comfortable.
Versatile: Works as a base or mid-layer in cold-weather.
Fabric
Polartec Alpha Direct 90. Our best selling, most versatile midlayer fabric.
What it's good for
Popular with day hikers, runners, and thru-hikers. Warm enough alone, and pairs well with a wind or rain shell for extra warmth.
Weight
5oz for a Wide Medium
Care
This is a delicate fabric and must be treated as such. It will snag easily, so keep it away from Velcro, dog claws, and bushwhacking. Machine wash cold and hang dry.
Shipping & returns
Shipping & returns
Ready to ship pieces ship in 1–3 business days. Made-to-order and custom pieces ship once they're sewn, currently in about 8–12 weeks. Orders that mix both ship together.
Free shipping on US orders over $130, and a flat $25 to most other countries.
Unworn ready-to-ship pieces can be returned within 30 days of shipping. Made-to-order returns have a 25% restocking fee, and custom returns 50%. Full returns policy
Made in the USA
Made in the USA
Every Sambob piece is made in the USA. Our made-to-order and custom pieces are sewn by our team of three in Portland, Maine. Everything else is made by small sewing shops on the East Coast.
About 90% of our fabric is made in the USA, including all of our Alpha.

Incredible
Super soft, sized right but this is a VERY thin hoody. My wife was super disappointed … we will see if it gets used ;(
You’re always welcome to reach out about fabric questions and returns if you like!
Yes, very thin indeed, which is why people love it so much. Very light, very thin, but very warm despite those things. It also breaths incredibly well, making it an exceptional active layer.
Love the color and alpha! This garment is a wee short… not sure why or if I got a “short one?” I am 5’3” with a short torso and it just seems off.
Otherwise, happy!
The zip hoodie was my go-to warm layer for a weeklong early season romp through Capitol Reef National Park. It kept me warm and cozy at night in my tent and was the perfect outer layer over my sun hoodie during the day when deep in the canyons where little sun reaches. The large zip opening makes it easy to add or remove from your layering system, as long as you keep it away from any Velcro in your pack setup. Being as we were in the desert before the onset of monsoon season, it didn’t get wet so I can’t comment on the dry time. But I’m sure it’s pretty quick with a nice breeze. When washing at home I make sure to put it in a separate mesh bag to it won’t snag on another item of clothing, zippers or Velcro or whatnot. Overall impressed and plan on making this a part of any cool/cold weather layer system when high exertion is on the itinerary.
The highest of qualities. This will be my first choice 75% of the year. Thoughtful features.