Zip — Rdt

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

highlight its versatility, noting it can function as a standalone piece in mild spring weather or as an essential component of a winter layering system. RDT zip

It is frequently compared to the Patagonia R1 series; while the and similar performance-focused sites often praise the RDT

Its 100-weight construction provides a high warmth-to-weight ratio, making it an excellent mid-layer that fits comfortably under a shell without adding excessive bulk. RDT zip