It varies by model. Many arrive ready to use with no assembly, while others require adult assembly. Some come with tools included; others are designed to be assembled without tools. Always check the product listing for the specific assembly requirements before buying.
Common floor-protection features include non-slip fabric or bottoms, non-slip leg pads, and anti-skid plastic covers on legs. Feature availability varies by model, so check the item details if you need specific protection for your floors.
Weight capacities vary by model; typical reported values in the results include around 300 lb, 330 lb, and 350 lb. Check the specific product listing for the exact capacity of any chair you’re considering.