Smartwool Classic All-Season Merino Base Layer Bottom - Women's Twilight Blue Extra Small. Made of lightweight breathable Merino these base layer pants have an updated fit that improves functionality while enhancing aesthetics for a wide range of body shapes. We wrapped our super-soft responsibly sourced Merino around a nylon core to give it added durability so it can keep up with you. Wherever you're going and whatever you're doing our lightest-weight base layer bottoms are perfect for adventures during all seasons. Specifications for Smartwool Classic All-Season Merino Base Layer Bottom - Women's: Manufacturer: Smartwool Inseam Size: 31 in Gender: Female Age Group: Adults Application: Casual Fabric/Material: 88percent Merino Wool/12percent Nylon Apparel Fit: Slim Features of Smartwool Classic All-Season Merino Base Layer Bottom - Women's Our slim fit is intended to follow the contours of the body Our lightweight Merino jersey fabric uses a recycled nylon core to increase durability while still keeping 100percent Merino wool next to skin Merino-lined elastic waistband designed for maximum comfort 100percent Merino next to skin Merrow stretch stitching designed to elevate comfort range of motion and fit Package Contents: Smartwool Classic All-Season Merino Base Layer Bottom - Women's Smartwool SW016908G7410XS000: Classic All-Season Merino Base Layer Bottom - Women's Twilight Blue Extra Small