SUGOi Apparel Size Chart In a flattering silhouette, this warm weather short sleeve combines multiple cooling fabrics to keep you comfortable. Active LT is soft, quick-drying, and breathable, while Icefil panels react with sweat to provide a cooling effect. The Fusion shirt's Smart Seam construction creates a smooth fit for all-day comfort. Features: - Active LT is a fine line textured knit fabric for breathability and luxurious next-to-skin feel - Icefil(R) fabric panels are moisture reactive and cool your skin temperature - Smart seam construction reduces abrasion and provides a smooth drape on body - UPF 50 UV protection