I sent out a lot of rosaries and CD's and these bubble wrapped cushion mailers do the job. They are strong but flexible. The ink does not run on the cover when you are addressing them. They hold a lot of objects without tearing. I would recommend them.
These Bubbles Wrap Envelopes are great for mailing objects that need a little extra protection during shipping. They are 6'×9' and come in packages of 12. I used them to mail pens.
The 12 pack of cushioned mailers are a good value. I found them just as good as the higher priced name brand envelopes that are much more expensive. I sell on eBay so I'm very conscious of shipping costs.
I really liked these mailers. I was a little unsure as to what size I'd like for many different sized things I'd be mailing but I chose this size and it works great! Easy to use just peel the sticker tab thingy and waaalaaa! I use UPS and the UPS labels fit great on the front. I loved that I did not have to use a bunch of mailing tape to seal these up. I have used up the whole package of the mailers already so I'll need to make a trip back to Staples to buy some more. I think this time I will grab more in different sizes. :)
I have used these for all business shipments. Whether it be EBay sales or business mailings these work great. They stay sealed without any additional taping.