Buttery soft fabric for ultimate comfort. Modern foam cups for a perfect fit. Wire-free: supportive as an underwire bra, without the wire. Adjustable straps with no-slip comfort. Extra band coverage for a smooth shape and form. Adjustable hook and eye, accommodating for breast changes. Convertible straps. From Truekind website: Medium fits sizes: 30DD/E, 30DDD/F, 32D, 32DD/E, 32DDD/F, 34C, 34D, 36A, 36B 91% Nylon, 9% Spandex