Rip Curl Half Moon Bay Triangle Bikini Top. Destined for tropical escapes and crystal-clear waters, the Half Moon Bay Sliding Tri is a timeless triangle silhouette with a feminine floral print. Crafted from Microfiber Lycra® Extra Life™, this durable fabric is designed to ensure your swimwear maintains its shape and performance over time. Offering light support, it features adjustable straps and removable padding for a customizable fit. Metal logo trim. Adjustable straps. 85% Polyester 15% Elastane. Hand wash. Imported.