The Metal Frame Pool is very popular due to its sturdy frame and practical size. The pool is large enough for swimming, yet compact enough not to take up too much space in your garden. The liner of all Intex Frame Pools is made of three layers: a grid-like middle layer of polyester and two thick, durable outer layers. The pool comes with a stable metal frame into which the liner is hung. The frame is made of robust galvanized steel pipes that are not only strong and stable but also rust-resistant.