Reef Women's Stargazer X Corona Flip Flops New. Size 6. Skull. Day of the dead. The Reef Women's Stargazer X Corona Flip Flop brings the best of an all-time Reef favorite and added a few new tweaks to take them over the top. Composition 100% PVC-free Rubber. Details Water-friendly. PVC-free means this product is better on and for the environment. Bottle opener built into the footbed