Frames are metal (typically steel), and liners are made from PVC (polyvinyl chloride).
Capacities vary by model, from a few hundred gallons up to several thousand. Example listings show capacities from about 439 gallons up to around 8,403 gallons.
Assembly commonly uses snap-together frames, T-joints or other tool-free connections for quick setup. Frames are typically powder-coated or galvanized steel to resist rust.
Warranty lengths vary by model. Examples include a 30-day limited warranty, 1-year limited warranty, and 2-year limited warranty, depending on the product.
Recommended capacities listed across models range from about 2 people up to roughly 10 people, depending on pool size and depth.