Effective cleaning surface: The brush head uses 7 rows of premium, high-density nylon and a rounded, hemispherical design that expands the contact area — increasing effective cleaning area by up to 300%. The shape and bristle layout reach into corners and along grout lines to scrub away dirt, algae, and debris more efficiently than a flat brush. Durable aluminum construction: Reinforced aluminum structure and a metal backing add strength and stiffness so the brush resists bending during heavy scrubbing. The solid construction lets you apply pressure to remove stubborn grime from walls and tiles without the brush failing. Smart shape for tight spots: The rounded head and hemispherical ends are engineered to access narrow corners, steps, and tight seams where flat brushes miss. The round shape makes it easier to clean around ladders, light niches, and other obstacles. Gentle on pool surfaces: Premium nylon bristles with slick, rounded tips clean effectively while minimizing the risk of scratching. Safe for vinyl liners, painted pool floors, and other common pool finishes — including ethylene-lined pools — when used as directed. Wide compatibility: Designed for both above-ground and inground swimming pools, as well as ponds, spas, and hot tubs with liners. The brush works as a general-purpose scrubber for walls, tile lines, steps, and shallow ledges. What it removes: Easily dislodges small-to-medium debris such as leaves, hair, dirt, algae films, and scum before vacuuming or filtering. Typical uses Weekly maintenance: Scrub tile lines, walls, and steps during routine pool care to prevent algae buildup and reduce load on filters. Post-storm cleanup: Remove leaves and debris clinging to walls and corners after heavy wind or rainfall so the pool returns to circulation-ready condition faster. Detail cleaning before vacuuming: Work the brush around ladders, light niches, and tight seams to loosen grime that vacuums and skimmers may otherwise miss. Materials and performance summary Brush head: 7 rows of premium, high-density nylon with rounded hemispherical ends for reach and surface protection. Structure/backing: Reinforced aluminum with metal backing for strength and durability. Performance: Enlarged cleaning area and targeted shape improve effectiveness in corners and tight spaces while remaining gentle on common pool surfaces. This brush combines a high-contact nylon head with a reinforced aluminum backing to provide strong, effective scrubbing that is compatible with most pool and spa surfaces.