Billabong Sun Sippin One Piece Swimsuit. The Billabong Sun Sippin One Piece Swimsuit for girls is a fun, sun-ready essential made for endless days by the water. Whether she’s heading to the beach, splashing in the pool, or catching her first waves, this suit blends playful style with dependable comfort for active adventures. It features a cute knot accent at the center chest paired with a subtle keyhole opening for a stylish touch. Designed with adjustable shoulder straps for a secure, personalized fit and fully lined for added comfort, it offers full coverage so she can move with confidence all day long. 82% Polyester 18% Elastane. Lining: 92% Polyester 8% Elastane. Hand wash. Imported.