The BCW Graded Locking Case (powered by Zion Cases) is an ultra-durable, secure carrying case for your graded cards. The interior is made of dense foam and the lid is a soft foam lining to help secure your slabbed cards in place. These are designed to work with all grading companies, such as (but not limited to): Professional Sports Authenticator (PSA),Beckett Grading Services (BGS), Sportscard Guaranty Corporation (SGC), Certified Sports Guaranty (CSG), and Hybrid Grading Approach (HGA). The case is durable and will help prevent your cards from getting scratched, or damaged in transit. The case features a built-in combination lock to keep undesirables out of your business. The case is stackable and features subtle feet on one side that fit into the moulding on another case.You can customize the combination on your lock.