Smartwool Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Extra Small. As one of our heaviest base layer tops and one of our best base layers for cold weather this garment uses 100percent responsibly sourced Merino wool shoulder panels and a flatlock seam construction to help minimize chafing as well as keep you comfortable and temperature regulated as you enjoy high-intensity skiing hiking running and more. Specifications for Smartwool Merino 250 Baselayer 1/4 Zip - Women's: Manufacturer: Smartwool Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Slim Gender: Female Application: Casual Outdoor Fabric/Material: 100percent Merino Wool Weight: 7.9 oz Shirt Style: Midweight Thermal Thermal Shirt Apparel Weight: Midweight Application: Casual Outdoor Features of Smartwool Merino 250 Baselayer 1/4 Zip - Women's Slim Fit 100percent Merino wool fabric made with an interlock knit for enhanced comfort breathability thermoregulation and odor resistance Fit updated to improve functionality while enhancing aesthetics for a range of body shapes Back body seam wraps to front for body-enhancing fit Crew neck with raglan sleeves Flatlock seam construction designed to minimize chafing 8" (20 cm) center front zip with semi-locking slider Package Contents: Smartwool Merino 250 Baselayer 1/4 Zip - Women's Smartwool SW016373010-XL: Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Extra Large Smartwool SW016373001-L: Merino 250 Baselayer 1/4 Zip - Women's Black Large Smartwool SW016373010-S: Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Small Smartwool SW016373001-M: Merino 250 Baselayer 1/4 Zip - Women's Black Medium Smartwool SW016373001-XL: Merino 250 Baselayer 1/4 Zip - Women's Black Extra Large Smartwool SW016373001-XS: Merino 250 Baselayer 1/4 Zip - Women's Black Extra Small Smartwool SW016373001-S: Merino 250 Baselayer 1/4 Zip - Women's Black Small Smartwool SW016373010-M: Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Medium Smartwool SW016373010-XS: Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Extra Small Smartwool SW016373010-L: Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Large Smartwool SW016373010-XS: Merino 250 Baselayer 1/4 Zip - Women's Charcoal Heather Extra Small