Shimano has created a U.S. specific version of the PRO components website, showing only products that are actually available for purchase in the states. That said, Shimano’s press liason Devon Walton said he’s never seen the seatbag here on our shores, but, phhhh, details.
Just click on over to pro-bikegear.com and it should automatically figure out what country you’re in, with the full URL magically converting to something like pro-bikegear.com/publish/content/pro_2010/us/en with that last bit showing your IP’s locale. If that doesn’t work, just to go bike.shimano.com and click around until you find the link for the PRO components. See ya in 20 minutes or so…