Retro Y Thong Bikini Bottom SPLASH Retro Y Thong Bikini Bottom Paradise Pop Kulani Kinis Peaches Retro Y Thong Bikini Bottom Pacsun Retro Y Thong Bikini Bottom SPLASH. This is a 'g string' thong bottom that is perfect for laying out in the sun and keeping tan lines extremely low! Girls who buy this bottom are not shy and enjoy a true brazilian cut with a slim front design. SIZE & FIT Fit runs small, we recommend sizing up if you are between sizes. Coverage is minimal thong and style is low to mid rise.