The Smartwool Men’s Classic Thermal Merino Base Layer Bottom delivers a refined fit and enhanced functionality for all your cold-weather adventures. Made from 100% Merino wool, these slim-fit bottoms naturally regulate temperature, manage moisture, and resist odor, keeping you comfortable during skiing, running, hiking, or any high-intensity activity. The flatlock seams reduce chafing, while the fully functional fly and Merino-lined elastic waistband ensure all-day comfort next to skin.

Fit: Slim (follows body contours)

Inseam (M): 30" (76 cm)

Fabric: 100% Merino Wool

Features:

• Fabric helps combine the moisture management, temperature regulation, and odor resistance of 100% Merino wool with interlock knit for comfort
• Flatlock seam construction designed to help increase comfort and minimize chafing
• Fully functional fly
• Merino-lined elastic waistband designed for comfort
• 100% Merino next to skin
  

 

Men's Smartwool Apparel Size Chart

 

Size	Small	Medium	Large	X-Large	XX-Large
Chest	36”–38” 91.5–96.5 cm	39”–41” 99–104 cm	42”–44” 106.5–112 cm	45”–48” 114.5–122 cm	49”–51” 124.5–129.5 cm
Waist	29”–31” 73.5–78.5 cm	32”–34” 81.5–86.5 cm	35”–37” 89–94 cm	38”–40” 96.5–101.5 cm	41”–44” 104–112 cm
Hip	36”–38” 91.5–96.5 cm	39”–41” 99–104 cm	42”–44” 106.5–112 cm	45”–48” 114.5–122 cm	49”–51” 124.5–129.5 cm
Arm Length	31”–32” 78.5–81.5 cm	32”–33” 81.5–84 cm	33”–34” 84–86.5 cm	34”–35” 86.5–89 cm	35”–36” 89–91.5 cm
Inseam	30”–31” 76–78.5 cm	31”–32” 78.5–81.5 cm	32”–33” 81.5–84 cm	33”–34” 84–86.5 cm	34”–35” 86.5–89 cm