Rip Curl Classic Surf Cheeky Coverage Bikini Bottom. We took some of our best selling swim pieces and made them even better by designing with the environment in mind. Our Eco Surf Collection pieces are made from regenerated nylon while still maintaining the great support and aesthetic we love about our Classic Surf styles. Our Classic Surf Eco Hipster Bikini Bottom offers cheeky coverage in a classic cut. This easy to wear bottom features center back shirring and a merrow edge. You’ll want our women's surf swimwear bottoms in every color!