Convert is a cargo vest. The vest because it has no sleeves, cargo because it has pockets on the back for things you can't do without. The Coolmax Air Fresh material guarantees optimal thermoregulation and fast sweat removal. ULTRA-LIGHT MATERIAL MATERIAL COOLMAX AIR FRESH ECO SLIM FIT THREE POCKETS ON THE BACK ENRICHED WITH SILVER IONS - ANTI-ODOR UV PROTECTION UPF 25 MADE BY US FROM PET BOTTLES MADE WITH 100% LOVE IN CZECH REPUBLIC