is often considered lighter and more breathable, some users find it requires a wind shell more frequently due to its highly porous, breathable knit. Technical Specifications
and similar performance-focused sites often praise the RDT series for its breathability during uphill "grinds" where sweat buildup is a primary concern. Testers at Backcountry RDT zip
According to manufacturers' details found on Nordstrom and Bob's Sports Chalet : 100% polyester FlashDry™ fleece. Weight: Approximately 9 oz (claimed for women's medium). is often considered lighter and more breathable, some