... and adjustable collar makes for easy on-and-off. Neoprene Swimming suit Material:Nylon+SBR+NylonThickness2-3MMSize:6month-30monthProduction processFlat lock stitchZippernoneColor ... series material(Standard Nylon, Polyester Jersey, Lycra, PK fabric, Small Diamond Fabric, Strong-Pad Fabric, Shiny Terry, OK Velcro Cloth, Visa, Camo, Super ...