When The Mercury Drops, Reach For The Power Grid™ Short Sleeve Baselayer. It´ll Add Some Extra Warmth For Your Core, But Still Be Plenty Breathable—Avoiding The Dreadful Clamminess That Can Come With Warm Base Layers.Features:- 4-Way Stretch Fabrication Allows For Easy Layering Under Any Kit.Specifications:- Fabric Content: 91% Polyester, 9% Spandex Knit. Compare prices from: Specialized in Woman's Sportswear