Finding the right mid-layer for backcountry skiing, or an outer layer to wear while running or fat biking in cold weather can be tough. Too much insulation and warmth and you’ll overheat. Not enough and you’ll get too cold. I’ve tested and reviewed many of these sorts of technical layers, and the new Mountain Hardwear 32 Degree Insulated 1/2 Zip is one of my favorites.
This fleece and insulated jacket features:
- Stretch fleece construction
- Insulated chest and shoulders
- Half-zip design
- Thumbholes keep sleeves in place
- Reflective detailing for increased visibility in low light conditions
I’ve put the 32 Degree Insulated 1/2 Zip through many different activities this winter, including backcountry skiing, running, hiking and even mountain biking. Through it all, this layer has passed the insulated/breathable test.
Most notably, I really fell in love with this piece while winter adventuring in Moab. In January, temperatures were in the upper 30s, low 40s. I went mountain biking on the Slickrock Trail and felt worried that I would be too hot wearing this jacket but it turned out to be perfect. The stretch fleece allowed total body movement with no constriction. Plus it was very breathable. The upper core section has Thermal.Q® 40 g/m² which kept me nice and toasty but not too warm.
The next day I went hiking on the Longbow Arch Trail. Again, with just a thin merino wool layer on underneath, I was able to be out on the trail all day and was totally comfortable. This jacket is really a temperature regulating machine. Call it a Goldilocks jacket, I was never too warm nor too cold.
I’ve found the same to be true with backcountry skiing. On mild days in the skin track this layer has been perfect, though it’s not real appropriate for when storms roll in unless you have a shell to throw over it. The only thing I feel could be a benefit is if this layer had a hood I could toss over my head instead of having to dig a cap out of my pack (but that just means I’m lazy). FYI: there is a hooded version available. Also, I’m not a fan of pullovers, especially when used in activities (like backcountry skiing) where I might be taking layers on and off. If this had a full zipper, it would be about perfect.
Looking ahead to spring, this layer will be ideal for running on cold mornings and evenings. The stretch fabric will allow total freedom of movement. Other features are runner-friendly, like reflective logos on the chest and back plus reflective strips on the sleeves.
The Good: Stretchy fabric is awesome for high-output activity. Light insulation in core areas excel at temperature regulation. Very breathable – this layer is made for breaking a sweat in cold weather.
The Bad: Would be more user friendly if it was a full zip.
Final Word: From backcountry skiing, to running, Nordic skating, winter hiking and fat biking, if you’re looking for a stand-out mid layer for high-output, cold weather exercise, look no further than the Mountain Hardwear 32 Degree Insulated 1/2 Zip.