Contains silicone. 'Best Supporting Act' goes to... The award winning Curvy Kate Luxe Caramel Strapless Bra! This is the best strapless made for big boobs – the seamed cups offer lift and shape, as the band hugs your curves without the worry of slipping. Gravity defying strapless bra with vertical cup seams Award winning lift and support with inner sling to shape Silicone grip on underband for non-slip fit Underwired, foam lined cups Fully adjustable, detachable straps (30-36 D-F 15mm; all other sizes 18mm) Sizes 30-36 D-F fasten with 2 hooks, 3 columns; all other sizes fasten with 3 hooks Main: 84% Nylon, 16% Elastane Lining: 100% Polyamide Lining 2: 100% Polyester Wing Mesh: 78% Nylon, 22% Elastane