Extra strength aluminum will accomodate individuals up to 500 Lbs. * Cross brace attached with aircraft-type rivets * Blow-molded bench and back provide comfort and strength * Drainage holes in seat reduce slipping * Adjustable height legs * Aluminum Frame is lightweight, durable and corrosion proof * Height: 16 1/2" - 20 1/2" * 20" width seat * Limited Lifetime Warranty