What Our Gearhead(R) Experts Are Saying:"I brought the Rhea Shirt on a five-day trip through the Southwest and wore it three of those days without a second thought. The organic cotton and hemp blend stays cool when the temperature climbs in a way that synthetic fabrics just don't, and the drop shoulder fit is relaxed enough to move freely on a trail but put-together enough that I wore it straight to dinner without changing."The Rhea Shirt from Marmot is three ounces of organic cotton and hemp jacquard that somehow earns its place on every trip it comes on. The fabric is light enough to forget and breathable enough to wear through a full warm day without once wanting to take it off, and the relaxed drop shoulder cut and stepped hem give it a shape that looks considered whether it's over a swimsuit at the beach or tucked into a seat at dinner after a long day of wandering.