Smartwool Classic All Season Merino Long sleeve base layer Grey Trekkinn Smartwool Classic All Season Merino Base Layer Long Sleeve Review iRunFar SmartWool Classic All Season Base Layer Top Merino Wool, Long Sleeve Smartwool Classic All Season Merino BL Crew + Merino base layer Women. Product Condition: The Classic All Season Merino Base Layer Men's is in Fair condition. Covered in pet hair all over. Size: Unisex M Color: Pewter Blue Wash Retail Cost: $90. 00 In any season or sport, when we need added warmth, we start our layering system with the Smartwool Classic All Season Merino Base Layer. Overnight summer backpacking trips, shoulder season hikes, and active skintrack ascents keep us on our feet year round, and merino wool helps us combat the chill without letting us overheat or weighing us down. Why We Like The Smartwool Classic All Season Merino Base Layer (DWGBPSZ) TECH SPECS Material: 88% merino wool, 12% nylon jersey Insulation Weight: lightweight Fit: slim Center Back Length: [medium] 26. 5in Style: crew Anti Odor: natural attribute of merino wool Claimed Weight: [medium] 6oz Activity: ski, snowboard, hiking