bestway steel pro max 16 x 4 foot outdoor frame above ground round swimming pool set with ladder, cover, filter pump, and replacement cartridge bestway the bestway steel pro max above ground round pool set comes with everything necessary to enjoy splashing and swimming all summer long while taking up less room and using less water. no tools are needed for this easy-to-set-up pool. corrosion-resistant steel comprises the frame, featuring a framelink secured pipe connection system that snaps together in no time. the material consists of duraplus enhanced 3-ply reinforced pvc, rendering the pool puncture-resistant. with the round shape, your new above ground pool expresses a smaller actual footprint. this requiress less water to fill, while providing ample space for family and friends to splash and swim. this pool comes with an accessory kit that includes everything necessary to maintain your pool; a filter pump with an extra cartridge, step ladder, and pool cover. when the hot season is done, and it's time to put the pool away, the bestway steel pro max above ground pool sports a built-in flow control valve that attaches directly to a garden hose for easy drainage.