Dive into Effortless Cleanliness! 🏊♂️ Patented V-Flex technology ensures maximum suction while eliminating frustrating clogs. Multiple pre-programmed steering sequences guarantee thorough cleaning from floor to walls. Rugged tire treads provide exceptional climbing power and agility on all surfaces. Experience the ultimate cleaning with 4-wheel drive technology that conquers any pool terrain. The adjustable roller skirt adapts to your pool's contours, ensuring no spot is left untouched. V-Flex tech 4-wheel drive Rugged treads The Hayward W3PHS41CST AquaNaut 400 is an advanced suction pool cleaner designed for in-ground pools up to 20 x 40 ft. It features a powerful 4-wheel drive system, patented V-Flex technology for optimal suction, and multiple steering sequences for comprehensive coverage, making it the perfect solution for maintaining a pristine pool effortlessly.