The Kids' Aptos Show Shirt has mesh vent sleeves and a vented construction, which helps circulate fresh, cool air during intense activity. Riding on hot or sunny days is a breeze thanks to the Aptos' UPF50+ Sun Protection Fabric and Moisture Movement Technology which work to keep you dry and protected from the sun's harmful rays.Vent structure to enable air flow and regulate body temperatureMoisture Movement Technology keeps you drierPoly/spandex blend pique.Vent structureShow collar and placket with snap closureStock tie loopSun Protection Fabric with UPF rating of 50+ provides protection from ultraviolet rays