The Practice Bag is the most space sensitive disc bag available. It holds up to 45 Drivers or up to 30 Putters. The double-zippered top allows for easy access and the rigid insert will keep the bag straight even when filled to capacity. Going to practice or setting up at a fly mart has never been easier. The Practice Bag is the most efficient use of space for transporting large quantities of discs or for just keeping your trunk clean.