Material Silicone Reference Size Size 1=A ( Normal Bra Size A65/A70/A75/B65 ) Size 2=B ( Normal Bra Size A80/B70/B75/C65 ) Size 3=C ( Normal Bra Size B80/C70/C75/D65 ) Size 4=D ( Normal Bra Size C80/D70/D75/E65 ) Condition Weight: A:120g B:137g C:157g D:159g 1:A nude silicone based backless, invisible nude color strap self-adhesive bra of the highest quality at an incredible price 2:3This dream bra is made of silicone and polyolephine, a similar material to that used in medical patches and uses a special self-adhesive system similar to the material used in baby pacifiers. 3:The back and shoulders are totally bare with the this bra, perfect solution for wearing under backless and strapless dresses, party dresses, boob tubes and any kind of sheer or revealing garments 4:The feeling of freedom while wearing this Bra and its superb comfort makes it a must-have strapless and backless bra . It can be worn all day and it won't fall 5:The bra offers a push-up effect, enhances the bust line and cleavage by positioning the cups in a V shape. It is very easy to apply with two separate cups and a front fastening. Package include: 1x bra with invisible strap The size just for reference, please check your size before buying!