Could it be love? The Arc'teryx Rho LT Zip is our favorite synthetic base layer earning a Top Pick award! As an ultra-versatile and cozy base layer, we found ourselves comfortable and happy on outdoor adventures ranging from campfire singing to hiking peaks above 14,000 ft. The fleece interior sits close to the skin generating warmth and thermoregulating over a wide range of temperatures. The face fabric is slippery making it one of the easiest to layer contenders while the Elastine provides impressive stretchiness. If it's cold, put it under a fleece mid layer, or if you anticipate it to be warm outside put a tank top underneath. This is the only baselayer tested that features a handy stash pocket on the shoulder perfect for storing keys or a credit card.
While there's a lot of pluses with this piece, it's not perfect. While it has a wide range of thermoregulation, it's warmer than most. A great option for cold weather recreation like backcountry skiing. Though, when temperatures rise, it's not the most ideal. If that's what you plan on doing, we suggest a cooler synthetic like the Patagonia Capilene Crew or the SmartWool Merino 250 Base Layer Crew, our Top Pick for Wear All Day. While it's a warmer base layer, this piece takes home a prize because of its incredible durability, performance, and fantasatic versatility. Take it with you on your next big adventure, whatever that might be.