Built with a hyper-breathable, air-permeable fabric, stay cool and dry on wildflower-studded hikes in the Notus Short Sleeve. This lightweight performance short-sleeve polyester button-up wicks moisture and quickly dries to keep you comfortable on the move, while the flat-felled seams, simple plaid design and single chest pocket put the fashionable in fashionably late - the only way you arrive at night. AirExchange Performance Fabric. Packable, Air Permeable, Lightweight Fabric. Ultraviolet Protection Factor (UPF) 25. Polyester for Quick-Drying and Wicking. Durable Flat Felled Seams. Shirt Tail Hem and Single Patch Pocket. Regular Fit. 100% Polyester Plain Weave 2.3 oz yd. Weighs 0lbs 5.3oz (150.3g). Imported.