100 – 6″ X 8″ Stayflats Plus White Mailers. The 1 PSW is based on our very first original Stayflat Mailer.Originally designed to hold a 5″ x 7″ picture, over the years our customers have discovered a wide variety of uses. This mailer can accommodate a CD/DVD in a slimline jewel case, as well as small awards or certificates. Made from durable .028″ CCNB paperboard, it’s an environmentally friendly way to store and send CD/DVDs. It’s also 100% Recyclable.