After a year of using my Outdoor Vitals Highline Thermal Leggings, I've found them to be an ultralight powerhouse for keeping warm on trail without overheating. They've kept me warm in 30-degree temperatures while hiking and sleeping, thanks to their TORAY polyester fleece construction. I love the breathable mesh gusset and form-fitting design.
Three key features make the Highline Thermal Leggings stand out: their ultralight 4-ounce weight, excellent warmth-to-weight ratio, and versatile performance as both hiking and sleeping layers. I've been testing these thermal leggings for a year now, and I'm impressed by how much functionality they pack into such a lightweight package.
The leggings are constructed from impressive TORAY polyester fleece at 102 gsm, featuring a flat exterior that's perfect for layering and a brushed interior that feels soft against the skin.
I've found the breathable mesh crotch gusset to be especially effective, offering enhanced mobility while managing heat buildup while active. The elastic waistband, with its smooth outer face and fuzzy interior, makes these comfortable for extended wear and easy to layer under other garments. These leggings have proven to be warmer than merino wool when comparing similar weights.
The moisture management capabilities have proven reliable in my testing. These leggings effectively wick sweat from the inside out and dry quickly, which is essential for both active use and sleeping comfort. While they're not the most durable piece in my kit - they're on par with typical thin merino garments regarding longevity.
One aspect I especially appreciate is their layering ability as they are perfect with shorts.
For ultralight backpackers seeking a versatile thermal layer, these leggings hit a sweet spot between weight, warmth, and functionality. While they're possibly not the most durable option available, their performance as both hiking and sleeping layers makes them a valuable addition to any lightweight backpacking kit.
The combination of light stretchiness, quick-drying properties, and excellent mobility makes them especially well-suited for cool-weather adventures where every ounce counts.
Frequently Asked Questions
Can I Wear These Leggings Under Regular Pants for Extra Warmth?
Yes, I can recommend wearing these thermal leggings under regular pants for extra warmth! It's a great layering strategy I use often as my daughter plays soccer in cold days of winter in Texas. This thin, insulating fabric adds significant warmth without making your pants feel too tight.
How Do They Compare to Merino Wool Base Layers?
I find both choices have their strengths. While merino wool offers better odor control and natural thermoregulation, I prefer these synthetic leggings for their lighter weight, quick-drying properties, and excellent warmth-to-weight ratio.
Are These Leggings Suitable for Indoor Workouts and Yoga?
I'd say they're suitable for low-intensity indoor activities like yoga and stretching, they were built for trail running but I haven't used them for high-intensity workouts personally.
Do the Highline Thermal Leggings Pill After Multiple Washes?
I still use mine and haven't experienced any pilling after multiple long hikes and washes. The TORAY fleece fabric's durable construction and proper care (cold wash, low heat or hang dry) have kept these leggings looking new during my regular use.
Can These Leggings Be Worn Alone Without Shorts Over Them?
Yes, I've found these leggings can be worn alone, but I'd recommend them as camp wear rather than hiking wear. They're not as opaque as athletic tights, so I prefer adding shorts for coverage.
