These are good for mailing CD/DVDs in plastic cases in additition to enclosing other info i.e. announcements a personal note reviews etc. at the same time.
I would definitely recommend these Bubble Wrap cushioned mailing envelopes. I use them at work for mailing things out and they are the best. The peel and strip adhesive flap allows for fast processing and the plastic bubble insides are strong and hold up when other brands sometimes don't. The adhesive is strong enough to retain its hold as well and since the sticky strip extends all the way to the edges of the flap there are no loose ends to worry about getting caught in postal equipment.