As dawn paints the eastern sky with hues of possibility, the REI Co-op Midweight Long-Sleeve Base Layer Top becomes your reliable first layer, a silent partner in navigating varied conditions. Its advanced recycled polyester blend, featuring a wonderfully soft brushed interior, immediately gets to work, managing moisture by wicking sweat swiftly while simultaneously trapping essential warmth, even if unexpected dampness creeps into your day. Engineered with dynamic movement in mind, the fabric’s inherent stretch and thoughtfully gusseted underarms ensure an unhindered range of motion, letting you reach, stride, and climb without restriction. Flatlock seams glide smoothly against the skin, eliminating any friction points and making long days on the trail or extended traverses feel effortless. With UPF 50+ defense woven into its fibers, it’s a smart standalone piece in cooler sun, yet its streamlined design layers seamlessly under shells or mid-layers, adapting gracefully from a brisk morning run to a high-alpine trek. This is foundational gear that understands the rhythm of exploration, keeping you balanced and comfortable no matter where your path leads. 
 
PRODUCT CONDITION
 
This UnNew REI Co-op Midweight Long-Sleeve Base Layer Top - Women's is in Excellent condition. 
 
Products in Excellent condition have seen minimal use and wear. Any imperfections are purely cosmetic and do not affect the intended performance of the product.   



TECH SPECS

• Brand: REI Co-op
• Weight: 7.5 oz
• Material: 92% polyester, 8% spandex
• Ultraviolet Protection Factor (UPF): 50+
• Moisture wicking
• Quick drying
• 4-way stretch fabric
• Smooth face fabric
• Brushed interior
• Flatlock seams
• Gusseted underarms
• Made using bluesign®-approved materials