Cup parts vary depending on the size - each size is standard. The top is underwired from the inside - straps - the back is open - the bottom is shorts. The shorts are joined to the swimsuit under the skirt - it is a single piece. The opening of the back part is as in the last image - It is a first quality micro swimsuit fabric - It does not swell when taken in water and does not stick to the body. It has a fast drying feature - It transmits sunlight - It is made of materials suitable for human health and has passed all the necessary tests - It does not contain any chemicals harmful to health. Product Usage Information - Wash your swimsuit with white soap and cold water - - Do not machine wash - do not iron - - Do not sit on a rough surface - - Protect from sun oil and chlorine - - Do not store in a bag - - Do not dry in the sun.