Shop Girls's at RalphLauren.com, the Official Site of Ralph Lauren. Ollivia Rain Boot - This waterproof rubber rain boot is designed with equestrian-inspired details and a treaded outsole that provides superior traction. Rounded-toe silhouette. Pull-on styling. Rubber strap with a buckle-and-stirrup detail at the ankle. Padded insole. Treaded rubber outsole. Rubber. Imported.