The Arc'teryx Rho LT Bottoms are a fleece-lined, durable base layer that works well as a standalone layer or under shell pants in cool to cold weather. They deliver warmth, excellent durability, and strong wicking with comfortable, stretchy fit, and true-to-size comfort, though high water absorption when wet and long leg length can be drawbacks; ventilation is important to prevent clamminess in heavy sweat.
The Capilene Thermal Weight Bottoms for Women deliver exceptional warmth and breathability in a midweight base layer, thanks to soft Polartec Power Grid fabric and a gusseted crotch for mobility. They excel for high-output cool-to-cold backcountry activities like skinning uphill and climbing, though the see-through fabric may wear less durable over time and odor can linger.
Durable synthetic base layer tested for skiing, hiking, climbing, and snow play, offering a strong warmth-to-wicking balance and fast drying. The high-rise, comfortable fit with flatlock seams layers well under other layers and moves well with activity. A noted drawback is that the fabric tends to hold odor after use.