My husband has a favorite pair of boxer briefs and has had me help him make a pattern from it. The pattern has been successful he loves the fit but I am now in a pickle because I cannot find the type of elastic I need to make them. I can take the bands from former pairs but I am limited to making them when a pair wears out and then hoping the band hasn't worn out as well. Can you tell me where I can buy elastic waist bands like you find on store bought sport brief? I live in a small town in MO so it will have to be internet stores please. I am at least 2 1/2 hours from any large Joann store. Thanks for your help.