3.5 in. thick legs and top rails. Galvanized steel pipes. Self lubricating hangers. 4/0 galvanized welded chain. Black cut-proof seat. Applicable for ages from 5 years to adult. IPEMA certified. Swing w 2 Seats: 384 in. L x 288 in. W x 90 in. H (140 lbs.). Swing w 3 Seats: 384 in. L x 348 in. W x 90 in. H (280 lbs.). Assembly Instruction . Warranty . This product must be used as intended and with adult supervision. ShopLadder acts only as a sales agent for this productÃ¢s manufacturer, and as such, had no involvement in its design or production, or instructions for use.