Halfdays' smocked long-sleeve top outfitted with performance fabrication, a drirelease blend that's lightweight, breathable, soft, yet structured for owning the mountain from trailhead to summit. Fit & Design: Breathable, lightweight dri-release fabric Designed for 65degF - 85degF temperature range Eco-Friendly: Made from recycled polyester, tencel, and spandex Wicking: Wicking performance ensures a dry, comfortable hike Quick Dry: Dri-release quick dry finishing eliminates pesky pit-stains Textured Stretch: Smocked texture with comfortable stretch Additional Details: