BCW Resealable Team Set Bags are an acid free, archival quality product made of crystal clear polypropylene and have an adhesive strip on the lip. BCW Team Set Bags hold approximately 35 standard cards. These also work great to enclose toploaders and magnetics to ensure the cards stay in the holders. Team Set Bags hold all thicknesses of standard toploaders, and magnetic card holders up to 180 points.