The Contour Surf Collection FP Movement Reversible Challenge Back One Piece One Piece Swimwear Australia Womens One Piece Swimwear Speedo Reversible Challenge Back One Piece. Speedo Endurance+ Contour Clipback One Piece with; Classic training one piece Best suited to B D cup sizes Shelf bra for great bust support Panel lines provide increased bust capacity Chlorine resistant for everyday endurance Clip back anchors suit to torso, increasing support and makes getting into and out of this suit easier Modest legline, full coverage Made from: 53% Polyester 47% PBT Polyester (Endurance +)