Smartwool Men's Classic All-Season Merino Base Layer Bottom (Iron Heather)

Wherever you're going and whatever you're doing, these lightest-weight base layer bottoms are the perfect base layer for adventures during all seasons. They have an updated fit that improves functionality while enhancing aesthetics for a wide range of body shapes.

Watch this Smartwool Men’s Classic All-Season Merino Base Layer Bottom video to see how it fits.

It is made of Smartwool’s lightest-weight Merino jersey fabric – super-soft, responsibly sourced Merino wrapped around a Nylon core to give it added durability - so it can keep up with you. It keeps the no-itching, soft, thermoregulating, odour-resisting Merino where it matters – next to the skin.

This base layer is designed to keep you comfortable if you love getting outside and is made to handle a variety of seasons and uses. Designed to elevate comfort, range of motion, and fit, so you'll feel ready to take on anything at any time.

For more info on Smartwool 150 g/m², check out this video.

• Lightweight Merino jersey fabric with a recycled nylon core to increase durability while still keeping 100% Merino wool next to skin
• Merrow stretch stitching, designed to elevate comfort, range of motion, and fit
• Merino-lined, elastic waistband designed for maximum comfort
• Slim fit; this mid-rise bottom sits at or just below Belly Button