Navy polka dot dress, size M. - Brand: Sweet Mommy - Size: M - Design: Polka dot - Color: Navy - Style: Set-up Thank you for viewing. There is a nursing opening at the ribbon area under the bust. The sleeves also have gathers, a design that combines cuteness and a neat appearance. It's made of a very stretchy material that's comfortable to wear, and it's a perfect design for ceremonies such as a baby's first visit to a shrine.