Alpha 90 1/2-Zip Mock Neck
Alpha 90 1/2-Zip Mock Neck
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Features
Features
Breathable: Allows moisture vapor to escape, keeping the wearer dry.
Lightweight: Provides warmth without added bulk.
Thermal Efficiency: Traps air for insulation in cold conditions.
Quick-Drying: Hydrophobic, moisture-wicking, and fast-drying properties.
Versatile: Ideal for base and mid-layers in cold-weather.
Fabric
Fabric
Polartec Alpha Direct 90. Our best selling, most-versatible midlayer fabric.
What It's Good For
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.
Sizing + Fit
Sizing + Fit

Weight
Weight
5oz for a Wide Medium
Care
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 definitely don’t bushwhack in it!

I love this layer! It's warm as soon as you put it on, yet incredibly light. The fit is perfect, and I love the option of having a zip-neck.
I wear this 1/2 zip all the time, one of my favorite pieces of gear from SamBob. The fit is true to size, the zipper is smooth and the color is so cool- it changes with what your wearing, reflective like Sea Glass!
What perfect timing you had coming out with a 3/4 zip fleece. I was beginning to think I would have to make my own, and even though I can do it I didn't want to, lol. It has performed very well on my trip to Ireland and then to Greece. Thanks again!
Best mid-layer ever! The combination of warmth at rest, air flow during movement, and feather weight feel on body makes for my new favorite layer heading into fall. I can't recommend it enough! Thank you for the thoughtful touches on the cuffs and true to measurement construction.
Unbelievable how light it is! Soft and warm on your skin. I started with a large but I wanted the fit loose so I got the XL, still weights nothing and I love the green. Sambob was very quick with shipping and received it in time for my next adventure. The weather has been mixed, but if it was cool out I had it on. I gave the large to my sister and she loves the feel and the light weight.