Many mens swimwear designs are inspired by womens swimwear. Let's face it womens swimwear has had 50 years to get extreme and sexy, mens swimwear designs had a lot of catching up to do. I feel most of the real extreme mens swimwear designs are coming out of the USA with Koala swimwear i.e. koalaswim.com leading the wat. Many of there designs are similar to womens swimwear designs with added room for a mans equipment. Bikinis, thongs, g-strings work the same with mens swimwear designs in that they are form fitting and made to make the wearer look very sexy. Swimwear at this level is such a sensual expression.