Xtend+Climb® Stable Step. Kick and It Rolls Step and It Stays. Our compact lightweight Stable Stool rolls where needed then casters underneath to retract to a non-skid bumper when you step on it. Supports a whopping 300lbs has a wraparound bumper to protect furniture and walls from nicks and scratches and is designed for a lifetime of dependable use. You will find dozens of uses for it.