Smartwool Classic Thermal Merino Base Layer One-Piece - Men's Mink Heather, XL

What Our Gearhead(R) Experts Are Saying:"This one-piece is my go-to base layer for deep winter days on the mountain. The Merino feels amazing, the drop seat is a smart touch, and I love not having gaps at the waist when I'm bending or layering."When cold days demand full-body defense, we reach for the Classic Thermal Merino Base Layer One Piece. This suit surrounds us in the comfort and performance of 100% Merino wool, bringing breathable warmth, moisture control, and odor resistance to every winter pursuit-from skintrack climbs to snowcat rides. Its slim fit follows our body for easy layering, while flatlock seams eliminate chafing under shell pants or bibs. A functional fly and zippered drop seat offer smart solutions when nature calls, and the set-in sleeves and seamless waist reduce distractions so we can focus on the line ahead. It's full coverage that's ready for full send.