Backside Line
The light-weight Minus 33 Micro Weight 1/4 Zip Solar Hoodie Woolverino (males’s / girls’s) is excellent at serving to energetic customers regulate their physique temperature.
The wool cloth reminds us of basic outside put on. Wool is comfortable (and will get softer over time), odor-resistant, and has nice breathability and moisture-wicking properties. Essentially the most unimaginable facet of the material is its lightness. We had been shocked at how gentle this shirt was, particularly for a wool mix.
The light-weight cloth carried out nicely in cooler temperatures and even when moist. As we hiked with this shirt, we had been shocked once more at how comfy we had been via sunny climbs and shaded descents. This hoody’s means to adapt to temperature was the most effective out of all our examined tops for our greatest solar shirt gear information. Whereas it hikes exceptionally nicely, this shirt doesn’t supply most solar safety at UPF 20. Regardless that this shirt blocks ~95% of the solar’s dangerous radiation, my dermatologist want to level out that there are shirts that do higher.
Regardless of this, we consider this shirt is a superb purchase. It matches nicely, feels comfy, performs nicely in varied actions and settings, and the material feels sturdy.
How We Examined
We primarily took this shirt out on reasonable day hikes (~6 miles on common). Temperatures and situations diversified, however typically, we had been mountaineering within the 40s. Strolling via canyons allowed us to check this high on sunny ascents and shaded descents. To check the standard and luxury of the material, we additionally wore it with a loaded in a single day pack.
Fast Specs

Minus33 Micro Weight Woolverino 1/4 Zip Solar Hoodie
Greatest Solar Shirt for Temperature Regulating
CleverHiker Score:
4.3/5.0
Worth:
$110
Weight:
9 oz. / 8 oz.males’s / girls’s
UPF Score:
20
Material:
84% merino wool, 12% nylon, 4% spandex
Professionals
- Pure, wool-based cloth
- Odor-resistant
- Temperature regulating
- Material softens over time
- Breathable
- Matches true to dimension
Cons
- Worth
- Low UPF ranking
- Average dry time
Consolation
At first put on, the consolation of this shirt was common at greatest. The material has a mild stretch, however actually not as a lot as others we examined. Lastly, the handfeel has a wooly form of really feel.
The match hugs the physique, particularly the forearms. Whereas it isn’t pores and skin tight, it rests on the physique the place all the opposite shirts on this class float away from the physique.
Whereas the wool-based cloth doesn’t have the itchy wool really feel, it actually doesn’t have that comfortable, silky really feel that artificial materials have. Nonetheless, the shirt will get softer over time with put on and wash.
What the woolverino has over its softer artificial counterparts is an extremely skinny and light-weight feeling. The material has a mild stretchiness, but the threads really feel sturdy.
Solar Safety
The one main downside to the Minus 33 is its low UPF ranking and cuffs that don’t totally cowl the palms, even when utilizing the thumbholes.
Earlier than we even put the shirt on, we observed that we may see gentle via the material. This tracks with the UPF ranking of 20. Nonetheless, a rating of 20 blocks 95–96.6% of UV rays from reaching the pores and skin.
The shirt has a hood and thumbholes to assist hold the cuffs in place. We discovered the hood matches nicely and doesn’t fall off or into our eyes whereas mountaineering. Once we use the thumbholes, solely about half the hand is roofed.
Generally, the quarter zip presses an excessive amount of into our neck, however the tradeoff is that it protects your complete neck from the solar.
Breathability & Wicking Energy
This high actually performs beneath the stress of mountaineering. Although it holds onto sweat, it breathes very nicely and feels comfy (even with sweat) via altering temperatures.
On certainly one of our take a look at hikes, we took it out for a 6-mile hike in 48-degree climate. We had been in full solar and ended our hike simply earlier than nightfall settled.
As we began off, we wore this shirt and not using a mid- or outer layer. Whereas it was chilly and this shirt was skinny, it was manageable with simply this on. The very first thing we observed was how nicely it breathed. We may really feel the air flowing via it, however we by no means felt chilly and depressing. The truth is, after 20 minutes of strolling alongside a reasonably flat path and being within the solar, we had been heat and comfy.
With a loaded pack on, we started our climb. Initially, we had been frightened that it might be too scorching as we climbed. Although we began sweating (and panting), this shirt didn’t overheat. We really felt cooler on the high of the climb than on the backside.
The remainder of the hike wandered via shaded canyons because the temperature dropped, however we stayed comfy and heat even with residual sweat. At one level, we took the pack off and revealed the sweaty again to the wind and nonetheless, felt comfy.
Whereas this isn’t essentially the most breathable high, it capabilities nice in wind and funky temperatures.
Versatility
The Minus 33 has nice worth due to its versatility. It transcends seasons, settings, and outside adventures. Nonetheless, we wouldn’t rely on this high for its pocket.
Primarily based on our subject checks, this high is appropriate for year-round use, by itself in summer time and as a baselayer throughout cooler months. This shirt additionally works very nicely for all outside sports activities. We put on it for mountain biking, climbing, or going to the fitness center. This shirt’s model has an outdoorsy look to it that will not translate nicely to all off-trail events. However we don’t thoughts sporting it from the path to post-hike tacos (particularly as a result of it resists odors).
One notable characteristic is the zippered chest pocket. Nonetheless, we don’t discover it very helpful. The pocket is designed to stash a bank card or ID and perhaps a small set of keys, although we didn’t discover it comfy to stash keys in it. We predict this pocket is nice for these early morning runs which may occur to be routed round that doughnut store.
Ought to You Purchase the Minus33 Micro Weight Woolverino 1/4 Zip Solar Hoodie?
This can be a strong selection for anybody searching for a reliable, pure base layer. It really works nicely for many who demand technical qualities from their shirts however need a knitted, stretchy cloth. For this shopper, the Minus 33 can sustain for difficult adventures in altering climate.
We want this had a better UPF rating, however we’ll fortunately take the ultra-light “micro” wool cloth as an alternative. Due to this, this high might be not the selection for somebody searching for one of the best solar safety.
What Different Solar Shirts Ought to You Think about?
Discover different “better of” picks just like the Minus 33 in our full solar shirt gear information. Different worthy choices embrace:
Arc’teryx Taema / Cormac Assessment: This high offers a extremely technical cloth that’s simply as ideally suited for layering throughout difficult adventures as it’s for front-country path runs in the summertime months. The Arc’teryx barely beats out Minus 33 in technical skills. It additionally gives higher solar safety with a UPF 40+ ranking. The drawbacks are the Arc’teryx match and stiffness of the material.
Mountain Hardwear Crater Lake Lengthy Sleeve Hoody Assessment: This decide is one other ultra-lightweight knit that breathes fairly nicely. Straight out of the field, this shirt is noticeably softer than the Minus 33. The material has larger stretch and higher solar safety (UPF 50). Nonetheless, this shirt can’t compete with the Minus 33’s means to adapt to altering temperatures.
Free Fly Ladies’s Bamboo Shade Hoodie II Assessment: This knit has a heavier, however softer cloth than the Minus 33. The Free Fly feels silky comfortable and drapes very well. It offers higher solar safety (UPF 50+) however is likely to be extra appropriate for simple to reasonable, frontcountry adventures.