http://store.lowepro.com/toploading/toploader-pro-75-aw
I have the smaller one which is great but won't fit, the 7D w/70-300 looks to push 22cm long so it should fit fine, I think you'll still get the extra part in there so can use it as extra padding or tuck a cloth/card or something below it.
I have the smaller one which is great but won't fit, the 7D w/70-300 looks to push 22cm long so it should fit fine, I think you'll still get the extra part in there so can use it as extra padding or tuck a cloth/card or something below it.