Optimized with a low-compression core, the Pro Air is the lowest-spinning and, therefore, the longest offering in the Vice Pro family. Despite the low spin rates, the Air's slightly higher launch characteristics result in a relatively steep, green-holding launch angle. Vice Pro Air Golf Balls Feature: 3-Layer ball Lower compression size-optimized High Energy Speed Core improves feel at slow swing speeds and efficiently converts energy into distance Zinc ionomer thermoplastic DuPontTM Surlyn grade mantle minimizes wood and long iron spin for maximum distance Higher launch increases driver carry distance and creates a steep launch angle with mid and short irons to hold the green Thinnest Cast Urethane cover for maximum control and short-game spin Meticulously designed 318 dimple pattern improves aerodynamics Tapered alignment aid helps visualize aim on the tee and the green Compression: 75