2015 Top Flite Bomb (24 Pack) Engineered for explosive distance and extremely soft feel for unrivaled performance The combination of a larger core, softer cover, and low spin dimple design deliver balance playability New, larger core design provides more efficient energy transfer for optimized ball speeds and distance Highly resilient, maximum Coefficient of Restitution polybutadiene core for consistent, reliable performance Ionomer blend cover feels extremely soft while producing increased greenside spin for improved control