The Smartwool Women's Merino 150 Plant-Based Dye Baselayer Short Sleeve Top is a breathable and moisture-wicking layer that keeps you feeling fresh during intense outdoor activities. Crafted from premium merino wool blended with nylon, this top regulates temperature to keep you cool and dry as your workout intensifies. Its odor-resistant and quick-drying properties make it a versatile companion for any adventure. Whether you're hitting the trails for a challenging hike or squeezing in a high-energy gym session, this baselayer top has your back. Its form-fitting yet flexible design minimizes chafing, allowing you to move freely. Take on your day with confidence, knowing this top has your comfort covered from start to finish. Stay active and embrace new challenges with Smartwool's commitment to quality and performance. - Temperature-regulating, anti-odor merino wool for reliable comfort - Nylon-core threads boost strength and keep soft merino next to skin - Eco-friendly plant-based dye uses natural materials and less water - Raglan sleeves and princess seams improve fit and mobility - UPF 20+ rating adds defense from solar rays