Size 34F US. Specs: The No-Sweat Mesh is both hyper-breathable and designed with higher bust containment to keep you breathing easy through your sweat sesh. Full coverage and full support mean you’re held up (and in). Hook-and-eye closure with 3 columns & 3 rows increases with size. Adjustable, non-stretch straps stay put through any movement. Lightweight mesh fabric keeps you cool and dry. Materials: 57% Polyester 35% Polyamide 8% Elastane Care Instructions: Machine wash warm. Line dry. Do not bleach.