The Most Natural Carrier™. Among new parents, the news is spreading fast: For snug and secure, go-anywhere comfort thats second to none, SlingRider® is the answer. Slip it over your shoulder and see what they mean. Extra-secure swaddling harness system without buckles or hard edges to cause discomfort. Easy as... one, two, three. * Adjustable, padded shoulder strap * Elastic opening expands as baby grows. * Secure harness system * Newborn to 20 lbs / 9.0kgs * Perfect for nursing