Beach Bunny Rib Tide Bikini Bottom in Black. – size XS (also in L) Beach Bunny Rib Tide Bikini Bottom in Black. – size XS (also in L) Poly blend. Hand wash cold. Adjustable side straps. Ribbed fabric. Ruched rear seam. BEAC-WX380. B17125B2. Beach Bunny swim separates offer a variety of mix-and-match styles for a unique, beach ready look. Lace, chain, and ruching details combined with comfy fabrics make for an undeniably flirty, figure flattering look.