I received this when I enrolled in baby swimming lessons at the beginning of the year, but I put it away after wearing it twice because it got warmer. When worn, I put it on over swim diapers and a swimsuit. The fabric is very substantial, and my child seemed very comfortable. Although it says 18-30 months, it seems like it could be worn from an even younger age. Pink neoprene-like fabric baby swimsuit, front-open design for easy on and off. - Color: Pink - Design: Front open, with snap buttons - Material: Neoprene-like fabric - Uses: Swimsuit, rash guard Thank you for looking.