The PSA Stackable Slab Bumper Guards are a set of 3 protective cases designed specifically for PSA graded cards. Made from PLA and plastic materials, these white guards feature a 3D printed design and are compatible with PSA graded slabs. Each guard can hold one card and is ideal for graded card protection. Proudly made in Canada, these bumper guards are a convenient and practical solution for sports trading card enthusiasts looking to keep their graded cards safe and organized.