Flume 1/4 Zip Baselayer - Men's


Size Guide


Named the overall best hiking shirt by Field and Stream, the Flume is a blend of Tencel (made from trees!) and spandex.  Tencel is naturally wicking, naturally odor resistant, thermo-regulating, and crazy comfortable. The ¼ zip adds a bit of style for your après hike or ski activities ensuring comfort on the mountain and style at the watering hole.

40 UPF.

Men's Flume Crewneck

Women's Flume 1/4 Zip

Women's Flume Crewneck

Weight in ounces:
XS: 7.0
S: 7.4
M: 8.1
L: 8.7
LT 9.2
XL: 9.8
XLT 10.2
XXL: 10.4

Made in the USA:  Crafted in Lincoln, NH; Fall River, MA

4 way stretch fabric for superior movement and fit
Extended length to ensure coverage when active - no more exposed lower back!
¼ zip for better venting when required
Thumb loops for secure hand coverage - layering warmth when you need it!
Raglan sleeves for greater movement
Flatlock stitched to reduce chafing - smooth and comfortable on your skin!

Fabric: Texollini, Long Beach, CA; 91% Tencel, 9% Lycra
Zippers: YKK, Macon, GA

Machine Wash Cold with like colors, gentle cycle
Do not dry clean
Do not bleach
Tumble dry low or lay flat to dry 

Customer Reviews

Based on 139 reviews
Kevin D. (Hanson, US)
I need more

I am ashamed to admit that I love this shirt so much that I wear it entirely too many times in between washing. Embarrassing I know, but it feels so good and helps regulate my body temp so well I can wear it layered for days in a row.

Anne o.M.F.F. (Mansfield, US)

I bought this because I wanted to support a local company and liked their community and ecological support. I was pleasantly surprised how awesome this base layer is! Soft, comfy and warm. I never want to take it off!

Pauline S.
Base Layers

Gave 5 base layer shirts as gifts to my Boulder adult children and they love them! Great quality product.

Ed S. (Simsbury, US)
Flume 1/4 zip

I like the light weight and wicking features if this base layer; am attempting to determine what I need for mid layer and outer shell. My last hike with temps in the low 30’s using the flume 1/4 zip with a mid weight fleece and hard shell, both other brands, did result in some moisture on the inside of the hard shell

Gerry L. (Las Vegas, US)
Warm and comfortable shirt

Had some cold weather and found the shirt ideal for colder weather.