An attractive, affordable way to help your pet reach her favorite napping place;Safety siderails let your pet climb with confidence;Ideal for small or medium-size dogs;Super lightweight at only 5 lbs, the unique construction of these stairs supports over 120 lbs;No assembly required;Overall product dimensions: 24 inches deep x 16 inches wide x 19.5 inches tall; tread dimensions are 13 inches wide x 6 inches deep x 4.75 inches tall and the tread covers are slightly smaller