http://www.solar-swim.com/index.php?pag ... &Itemid=78Frequently asked questions
1. Is the Tan Thru® suit see through? The Solar Tan Thru® suit ist guaranteed not to be see through when worn wet or dry. This remarkable feature is achieved with Solar's unique prints which create a high contrast of colors. Such contrast tricks the eyesight creating an optical inability for the human eye to see past these specially designed prints when the suit is worn.
2. How long will it take to achieve an all over tan? It will depend on your skin's ability to produce melanin which is the pigment that darkens when human skin is exposed to sunlight. This is a gradual process. Continious tanning also ensures a longer lasting tan. To achieve an all over tan, it will be necessary to use a SPF lotion of 4 to 8 (or higher as needed) on skin which is not covered by the suit. The SPF lotion will work in conjunction with the suit's built in SPF filtration of UV, thus resuting in an all over tan.
3. How does the suit work? Solar's unique patented fabric is made by using a special knitting technology which creates thousands of tiny pores in the fabric. These pores act as a shade cloth, and filter approximately half the sun's light. This filtering process is comparable to the SPF between 5 and 10 depending on skin type, time of day and UV index.
4. Is it possible to sunburn through the suit? It would take a rather prolonged exposure on an mid summer day to get a sunburn. The key to adding a little color to your life is moderation. Overexposure to the sun will not help you achieve a tan any faster and of course is not recommended.