You're always the voice of optimism in your ride group, so when the temperatures soar and the clouds disappear, put on the Castelli Protagonista Jersey and convince the group that the heat's not so bad. Light and supple, this jersey comes with a streamlined design that won't overwhelm you with extra details on a sweltering day. Castelli's clean cut and breathable Softlex fabric feels soft against the skin like your favorite broken-in tee, but wicks moisture like the capable synthetic it actually is. Pair hot weather functionality with Castelli's always-impeccable slim fit, and you'll have no trouble keeping spirits high through summer's inferno.