L.L. Bean Mens Swift River Flip-Flop Sandal Sport in Dark Silt - Size 9 From your trail rides to outdoor walks, the L.L.Bean™ Swift River Flip-Flop Sandal Sport offers superior comfort and support. Featuring odor-fighting technology that keeps your feet fresh and odor-free, the synthetic lining and EVA footbed offer a cushioned feel. The leather and synthetic upper of these athletic flip-flops come with waterproof leather straps that are lined with soft foam for long-lasting comfort. These casual slippers are contoured under the arch to massage the feet for a comfortable walking experience. Slip-on style. Open, round toe silhouette. All-terrain VertiGrip outsole for superior grip.