With the special glue work and productive technology as its vital advantage over the others, the cups and straps are made out one-off , and put the steel rings into the bras simultaneously, you almost can't find where's the seam, joint in the bra. Once you choose to wear the Seal Beauty easy seamless underwear, immediately you will feel it comfortable and thoughtful 2) Material: 80%Polyamide 20%Elastane 3) size: 32/70A-42/95C 4)Color:nude, black, red, blue, purple