It's not a G-String it's Our New B-String (B for Berrydog). Our New V-string Style Micro Bikini in our very pretty red top color is the sexiest thing on the beach. Like wearing nothing this comfortable bikini is sure to turn heads and cause some heart-attacks. The B-string is our smallest bikini and like our other thong bikinis is perfect for tanning or just showing off. Comes with our sexy Adjustable Triangle bikini top. Both top and bottom are lined. Please note due to hygienic reasons G-strings Tonga & Thong bikinis are not returnable. Top comes in three sizes (S, M, Large)and Bottoms come in three sizes S,M,L and one is sure to fit you nicely. For sizing we recommend the following guidelines: Tops (small: A cup/Small B), (Medium: B cup/Small C) (Large C cup/Small D). For Bottoms: (small 0-3) (medium 4-7) (large 8-11).