Acacia Swimwear Humuhumu Top in Rust. - size XS (also in ) Acacia Swimwear Humuhumu Top in Rust. - size XS (also in ) Self: 80% nylon 20% spandexLining: 85% nylon 15% spandex. Hand wash cold. Halter strap ties around neck and back. Tassel accents. ACAC-WX521. WSWHUMU001. Founded by Naomi Newirth and Lyndie Irons, Acacia Swimwear is a collection of swimsuits inspired by the love of travel and exotic beaches the girls get to call their home away from home. Acacia encompasses the lifestyle of the Gypsetter. It is a fuse between the perfect low cut Italian bikini and flirty Brazilian fit. Detail oriented with custom prints and lining, soft Italian fabric, and seamless comfort, Acacia is truly one of a kind.