Nike Adds Realtree Camo to the Calm Mule & Calm Slide。Enjoy a calm, comfortable experience—no matter where your day off takes you. Made with soft yet supportive foam, these slides are easy to style with or without socks. And they’ve got a textured footbed to help keep your foot in place. Benefits Contoured design is made from a single piece of foam for a smooth, seamless feel. Textured footbed provides grip to help keep your foot in place. Outer shell is made from water-friendly foam that is easy to clean. Rubber outsole gives you optimal traction on slippery surfaces.