Wore this on a 6-mile climb in 90-degree heat and it barely felt like I had anything on. The knit is so light and breathable that sweat dried almost instantly on the exposed sections.
Avery★★★★★
Bought this for summer trail runs and the lightweight knit really does breathe—I barely notice I'm wearing it even when the sun's beating down. Dries fast after a sweaty climb too.
Steven★★★★☆
Wore this on a humid 10k last weekend and it stayed surprisingly light and breathable the whole way. Only gripe is the fit runs a touch long in the torso, but for warm trail runs it does the job.