people think that to live a healthy fit life you have to sacrifice that. i credit our staff for being aggressive. i'd love to know in the comments below! 5th sitting 8th may 2008. also, many of them can hook up a second bag where you can pack your books, shoes, and other heavy items. you can also top them with whatever you like. it’s necessary to walk our daily route or the dog will get wise to the assignment. love this product and will continue to use. 