Designed for hiking and trekking, the Iridine Crew LS is geared for cooler conditions and difficult terrain. Made from hardwearing, quick drying SkythaTM polyester fabric, the Iridine is durable, air permeable and offers stretch performance. SkythaTM delivers UPF 50 sun protection, and has an HeiQ Pure finish to minimize odour accumulation and retention. Features: Moisture wicking Breathable Lightweight Durable Quick drying Minimal odour retention Composite construction Strategically placed seams increase comfort and reduce chafing Gusseted underarms Crew neck Long sleeves Relaxed Fit, Hip Length Weight: 220 g 7.8 oz Activity: Hiking Trekking Materials: HeliusTM 100% polyester 112 gm . A lightweight, breathable, stretchy, plain knit textile with a moisture wicking finish to promote evaporation. SkythaTM 100% polyester, 172gm . A burly, mid weight, technical knit fabric with a subtly textured outer face and excellent moisture management properties. HeiQ Pure finish helps minimize odours. UPF 50 rated for sun protection.