I'm not sure what the other reviewer was expecting, these are not mailers. These are basic CD/DVD sleeves for storage. Tyvek is like super-strong paper. I have been using this product for years and they are perfect for bulk-storage of CD/DVD's. I would never use paper sleeves, as tiny bits of paper end up on the DVD media and are a pain to remove. Tyvek is durable and does not mark the plastic in any way. At $15 for 100, the price is competitive. I've seen them as low as $13, but if you go to Staples or Office max you'll find them in the mailer isle and they charge $45 for a box of 100! If you plan on long-term bulk storage, Tyvek sleeves are the way to go. I would not use paper sleeves.

This Tyvek DVD enveolpe it too thin and flimsy to serve its intended purpose. My purchase of this item was a total loss.