LUXEHOME Colorful One Pair of Neoprene Coated Dumbbells with Non-Slip Grip neoprene Imported The durable, neoprene material is great for indoor and outdoor workouts. The special design of the dumbbells prevents them from rolling when not in use. These dumbbells sets take very little space and can be placed anywhere such as your home, gym, even your office or trip. Don't let your workouts stop at home. LUXEHOME dumbbells are ideal for group exercises, bodybuilding, strengthening muscles, alleviating stress, physical therapy and other general exercises. Cast Iron Interior - Builds strength and Improves muscle tones. Dumbbells are an essential addition to any strength training routine.