Smartwool Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather Large. The year-round Merino 150 Base Layer Long Sleeve is game for either. With our Core Spun technology we've wrapped lightweight Merino around a nylon core for added durability while still keeping the comfort of ultra-soft responsibly-sourced Merino next to skin. We added smooth flatlock seams to help minimize chafing and offset shoulder and side seams to lie smoothly beneath pack straps. Select colorways feature a more responsible plant-based-dye technique. No matter the season or the activity this base layer is made for it. Specifications for Smartwool Merino 150 Baselayer Long Sleeve - Men's: Manufacturer: Smartwool Sleeve Length: Long Sleeve Age Group: Adults Apparel Fit: Next To Skin Gender: Male Application: Layering Casual Shirt Style: Lightweight Thermal Fabric/Material: 87percent Merino Wool 13percent Nylon Core Weight: 6 oz Application: Layering Casual Apparel Weight: Lightweight Sleeve Type: Long Sleeve Features of Smartwool Merino 150 Baselayer Long Sleeve - Men's Slim Fit Raglan sleeve design elimates need for shoulder seams Flatlock seam construction designed to minimize chafing Package Contents: Smartwool Merino 150 Baselayer Long Sleeve - Men's Smartwool SW016042D74-PG/BP-XXL: Merino 150 Long Sleeve Baselayer - Men's Pine Gray/Balabar Print 2XL Smartwool SW000748545M: Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather Medium Smartwool SW000748545L: Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather Large Smartwool SW000748545S: Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather Small Smartwool SW000748D36S: Merino 150 Baselayer Long Sleeve - Men's Iron Heather Small Smartwool SW000748D36XL: Merino 150 Baselayer Long Sleeve - Men's Iron Heather Extra Large Smartwool SW000748D36L: Merino 150 Baselayer Long Sleeve - Men's Iron Heather Large Smartwool SW000748001S: Merino 150 Baselayer Long Sleeve - Men's Black Small Smartwool SW000748D36M: Merino 150 Baselayer Long Sleeve - Men's Iron Heather Medium Smartwool SW000748001L: Merino 150 Baselayer Long Sleeve - Men's Black Large Smartwool SW000748545XL: Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather Extra Large Smartwool SW000748001XXL: Merino 150 Baselayer Long Sleeve - Men's Black 2XL Smartwool SW000748001M: Merino 150 Baselayer Long Sleeve - Men's Black Medium Smartwool SW000748545XXL: Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather 2XL Smartwool SW000748001XL: Merino 150 Baselayer Long Sleeve - Men's Black Extra Large Smartwool SW000748545L: Merino 150 Baselayer Long Sleeve - Men's Light Gray Heather Large