Look great and tan safely through your swimsuit or sportshirt! You work. You play. You work some more. Why not go for that all-over tan... wherever you are. Just relaxing in your yard, COOLTAN tan-through sportswear lets you get a safe, natural tan right through your suit.. It's safe. It's easy. And it's 100% cool & comfortable! Works like an SPF 6 Sunscreen...The secret is Microsol and MicrosolV, new lightweight fabrics that let sunlight through like a medium level sunscreen, eliminating the need for messy oils and lotions. You'll get a tan about as fast as you would with an SPF#6 sunscreen, and you'll never have to risk unprotected exposure to the sun.