this weekend I went to LBS and got a Surley 1x1 rigid fork and tube for my son's coaster bike (12" tube) and a new saddle. Couldna put the box with the fork in my saddle bag because I was towing a tag-along with my son on it. So I bungied the box to my handlebars and biked home with son in tow. (He's excited to get a bigger bike.)