SWELL Bikini Tops - SWELL Kelly Fixed Triangle - Electric Blue :: Women > Bikinis. Material: 95% Polyester 5% Elastane Fixed triangle halter bikini design Fit: Regular fit. A-B cup. please note this is a smaller style cup. we recommend going up 1 size if you are wanting more cup coverage Women's Swell Bikini Top Textured fabric Fully lined Removable soft cups for optimal shape and support Tie back and neck Underbust elastic for added support and comfort Exclusive Product Model wears a size 10/Small and is a B Cup Top only