Merino wool has long been the tried and true pinnacle of layering materials. It has a crazy warmth-to-weight ratio, it's breathable and moisture wicking, and it stays warm even when it gets wet. Combine that with the power of Helly Hansen's house blend moisture management tech, and you can imagine you're getting just about the best snowsport base layer you could get your hands on, or your elbows into. The Helly Hansen Lifa Merino Midweight Crew Base Layer Top is so comfy and high performing you might want to set a reminder on your phone to take it off and wash it every few weeks.