30D to 40J.This Non-Wired Sports Bra ‘Impact Free’ is a revelation in sports bra design giving maximum support and comfort with minimum 'bounce'. The bra has a moulded poly/cotton seamless inner cup to prevent nipple irritation and the outer is made from 100% cotton for its natural wicking properties. The bra has been developed and tried on female jockeys for the ultimate ‘bounce’ test. ‘Impact free’ gives fantastic support up to J cup! Other properties Cushioned strap for comfort, 4 Eye position for flexible fit, additional velcro fastner for extra security.rear view detail Voluptua says "This bra gives me as much lift as my regular bras and I still have separate boobs! I can even wear it without a t-shirt. The sizing is a bit different to my other bras so I recommend trying several for the perfect fit."