From a layup to a dunk, basketball is all about speed, precision and agility. Create your favourite shots on the court with this Cosco Challenge Basketball. Designed for Advanced Level of Play For players who are already at an advanced level and looking to amp up their game further, this size 7 ball is highly suitable. Leather Outer Material The outer layer of this ball is made from leather for improved durability and is designed for playing indoors. Butyl Bladder Type Fitted with a butyl bladder, this basketball retains its shape for longer hours to let you practice or play without any disturbance. Reinforced with Multi-filament Nylon The outer layer of this ball is strengthened by the multi-filament nylon on the surface.