Backside Line
The light-weight Minus 33 Micro Weight 1/4 Zip Solar Hoodie Woolverino (males’s / ladies’s) is excellent at serving to lively customers regulate their physique temperature.
The wool cloth reminds us of traditional out of doors put on. Wool is tender (and will get softer over time), odor-resistant, and has nice breathability and moisture-wicking properties. Probably the most unimaginable side of the material is its lightness. We have 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 have been shocked once more at how snug we have been by means of sunny climbs and shaded descents. This hoody’s capacity to adapt to temperature was among the finest out of all our examined tops for our greatest solar shirt gear information. Whereas it hikes exceptionally nicely, this shirt doesn’t provide most solar safety at UPF 20. Although 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 imagine this shirt is a good purchase. It suits nicely, feels snug, performs nicely in numerous 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 have been climbing within the 40s. Strolling by means of canyons allowed us to check this prime 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 Ranking:
4.3/5.0
Worth:
$110
Weight:
9 oz. / 8 oz.males’s / ladies’s
UPF Ranking:
20
Cloth:
84% merino wool, 12% nylon, 4% spandex
Cloth Weight:
145 GSM
Execs
- Pure, wool-based cloth
- Odor-resistant
- Temperature regulating
- Cloth softens over time
- Breathable
- Suits true to measurement
Cons
- Worth
- Low UPF score
- Average dry time
Consolation
At first put on, the consolation of this shirt was common at greatest. The material has a mild stretch, however definitely not as a lot as others we examined. Lastly, the handfeel has a wooly type 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 definitely doesn’t have that tender, 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 disadvantage to the Minus 33 is its low UPF score and cuffs that don’t totally cowl the arms, even when utilizing the thumbholes.
Earlier than we even put the shirt on, we observed that we may see gentle by means of the material. This tracks with the UPF score 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 maintain the cuffs in place. We discovered the hood suits nicely and doesn’t fall off or into our eyes whereas climbing. Once we use the thumbholes, solely about half the hand is roofed.
Typically, 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 prime actually performs beneath the stress of climbing. Although it holds onto sweat, it breathes very nicely and feels snug (even with sweat) by means of altering temperatures.
On considered one of our take a look at hikes, we took it out for a 6-mile hike in 48-degree climate. We have been in full solar and ended our hike simply earlier than nightfall settled.
As we began off, we wore this shirt with out 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 by means of 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 have been heat and comfy.
With a loaded pack on, we started our climb. Initially, we have been frightened that it will be too scorching as we climbed. Although we began sweating (and panting), this shirt didn’t overheat. We really felt cooler on the prime of the climb than on the backside.
The remainder of the hike wandered by means of shaded canyons because the temperature dropped, however we stayed snug 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 snug.
Whereas this isn’t probably the most breathable prime, it features nice in wind and funky temperatures.
Versatility
The Minus 33 has nice worth due to its versatility. It transcends seasons, settings, and out of doors adventures. Nonetheless, we wouldn’t rely upon this prime for its pocket.
Primarily based on our subject exams, this prime is appropriate for year-round use, by itself in summer season and as a baselayer throughout cooler months. This shirt additionally works very nicely for all out of doors sports activities. We put on it for mountain biking, climbing, or going to the fitness center. This shirt’s type has an outdoorsy look to it that won’t 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 function 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 snug 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?
It is a strong alternative for anybody searching for a reliable, pure base layer. It really works nicely for individuals who demand technical qualities from their shirts however desire a knitted, stretchy cloth. For this shopper, the Minus 33 can sustain for difficult adventures in altering climate.
We want this had the next UPF rating, however we’ll fortunately take the ultra-light “micro” wool cloth as a replacement. Due to this, this prime might be not the selection for somebody searching for one of the best solar safety.
What Different Solar Shirts Ought to You Contemplate?
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 Evaluation: This prime offers a extremely technical cloth that’s simply as ultimate 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 presents higher solar safety with a UPF 40+ score. The drawbacks are the Arc’teryx match and stiffness of the material.
Mountain Hardwear Crater Lake Lengthy Sleeve Hoody Evaluation: This choose 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 higher stretch and higher solar safety (UPF 50). Nonetheless, this shirt can’t compete with the Minus 33’s capacity to adapt to altering temperatures.
Free Fly Bamboo Shade Hoodie II Evaluation: This knit has a heavier, however softer cloth than the Minus 33. The Free Fly feels silky tender and drapes rather well. It offers higher solar safety (UPF 50+) however could be extra appropriate for simple to reasonable, frontcountry adventures.