Where to get the inflating bladders?

The question is in the title. Is there many sizes? Is it affordable?
Thanks

Read this:

http://www.icancomposites.com/forum/viewtopic.php?t=475

Thanks No wonder i couldn t find anything on a topic research :oops:

Try Latex Technology Inc. The have stock sizes in tubes and bags. Prices are reasonable and in the past Doug has been willing to make small quanties of a custom bladder if you pay for the master. you can get multiple uses out of the bladder if you cure at less than 250F. I’ve used these many times with great results.

http://www.latextechnology.com/bags_tubes.htm