Designed for round and square spas with reversible treads. Black, spongy, rubber that provides a safe non-slip surface that soft to the feet. Drawers that provide storage, creating the perfect storage step. Exclusive Features The Strongest step in the industry. The widest step with a 36" tread. Easy assembly, four pieces that press together for the perfect fit. Maintenance-free, no sanding or re-staining. Call the store to pick the best match for your hot tub cabinet.