Features

The Smartwool Merino Sport 250 Wind Boxer Briefs are the perfect running, skiing or hiking underwear to keep you comfortable when the temperatures drop. It is made of Smartwool’s warmest materials, a Merino wool/polyester blend that helps manage moisture, dries quickly and holds its shape during your run.

A windproof front panel provides additional protection from the elements. The minimal Merrow seam construction prevents chafing and enhances durability, while the super soft Merino wool provides comfort right next to your most sensitive parts. These underwear will soon be your favorite for years to come for winter running.

Sizing

Size

Chest

Waist

Hip

Arm Length

Inseam

Small

36”–38”

29”–31”

36”–38”

31”–32”

30”–31”

Medium

39”–41”

32”–34”

39”–41”

32”–33”

31”–32”

Large

42”–44”

35”–37”

42”–44”

33”–34”

32”–33”

X-Large

45”–48”

38”–40”

45”–48”

34”–35”

33”–34”

XX-Large

49”–51”

41”–44”

49”–51”

35”–36”

34”–35”

What Is Merino Wool? + -

Merino wool is a natural, durable fiber grown on Merino sheep. The breed is known for its very fine, soft wool, which is what Smartwool uses to craft each piece it makes. Unlike the old, scratchy wool sweaters you might be used to, Smartwool's Merino is super soft next to skin, helps naturally regulate your body temperature, wicks sweat away quickly, helps to provide UPF protection, is fire-resistant, is biodegradable, and won't stink when you start sweating. Basically it is the perfect piece for any adventure. When you buy Smartwool products, you can be sure you're getting a lightweight and long-lasting performance piece that will help you perform your best no matter the weather.

Materials & Care + -

Main Body - 56% Merino Wool, 44% Polyester; Center Back & Center Front Lining - 56% Merino Wool, 44% Polyester; Overlay Center Front - 85% Nylon, 15% Elastane Machine Wash Cold Gentle Cycle. Dry Flat, Do Not Tumble Dry. Do Not Bleach. Do Not Dry Clean. Wash With Like Colors.