With lightweight and fold-up convenience, this helpful half-stair can be taken with you. Plastic with molded treads for sure-footing, this step makes it easy to get through entryways where the full stair height is just too difficult. Easy open/close and locks into place. Add: 15½" W x 11"D x 4" H. Step weighs just over 3 lbs. but supports 300 lbs.