The Smartwool Men’s Intraknit™ Thermal Merino Base Layer 3/4 Bottom delivers the warmth, mobility, and performance you need for high-energy winter adventures. Made with a blend of ZQ-certified Merino wool and polyester, these midweight (200g/m²) bottoms offer fast dry times, natural odor resistance, and superior temperature regulation. Featuring Intraknit™ technology, seamlessly integrated insulation, articulation, and mesh ventilation, plus a 3D-mapped slim fit for freedom of movement, they’re built to keep you comfortable and dry during skiing, snowboarding, and cold-weather training.

Fit: Slim (follows body contours)

Inseam (M): 21.5" (55 cm)

Fabric: 54% Merino Wool, 43% Polyester, 2% Elastane, 1% Polyamide

Features:

• Featuring Intraknit™ technology: Insulation, articulation, and ventilation are seamlessly integrated to help with movement and comfort
• Seamlessly knit mesh ventilation
• 3D mapping results in near custom fit and freedom of movement

 

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