[mike_s]

Originally Posted by Splitlip

Can anybody tell me the diameter when rolled up?

http://www.scubatoys.com/store/detai...lingSafetyTube

I think mine is a little smaller than the diameter of a 12oz can of coke. So that would put it about 3 inch or so I'd guess in diameter.

Note: this has a dump valve in it that you can see in the picture that adds a little to the diameter and doesn't let you roll it up super tight. so you'll end up with a hollow spot in the middle of the roll except where the dump valve is.