Diamond Spas specializes in roof top swimming pools. Shown is a custom stainless steel swimming pool with bench seating, interior descending stairway, retractable automatic cover and swim jet system. Stainless steel is more durable and weighs considerably less than traditional swimming pool materials. Diamond Spas is a custom company. All products are built to client specifications. Also available in copper. Handcrafted, sustainable, made in the USA.