RockDove Slippers Are Built to LastDurable Indoor Outdoor SoleThe first RockDove slippers were made for outdoor enthusiasts who, even at home, actively shuffle in and out of the house for chores and hobbies. Staying true to our roots, every pair of RockDove’s comes with an indoor outdoor sole. Made of the same natural rubber used in trail running sneakers, they’ll let you walk to the mailbox or backyard without switching shoes. We've also added an anti-shock EVA layer to reduce impact when you step on the occasional living room Lego or driveway pebble.