Has anyone used one of these? Any problem with these things popping out of the water bottle cages?
There are millions of nice 24ozers every where
The only 280z I could find are at Jenson USA. I haven't used them, so can't vouch for their quality:
http://www.jensonusa.com/store/product/HY308B01-California+Springs+Water+Bottle.aspx
or
http://www.jensonusa.com/store/product/HY707B02-Water+Bottle.aspx