Swimsuits and Shirts work like a medium level sunscreen
The secret is Microsol, a unique patented lightweight fabric that lets sunlight through your shirt or swimsuit like a medium level sunscreen, eliminating the need for messy lotions. You'll get a tan about as fast as you would with a medium SPF sunscreen. The lightweight Microsol fabric also keeps you cool and comfortable! Air and water flow right through the fabric, so you'll stay cooler and drier even on hot summer days.