Jim Gerweck I just spoke to the Route Arrows gentleman on the phone. He also sells a wide tape for marking START FINISH etc., you can create your own shapes as needed. If you make a tab folded on them with the adhesive you may be able to peel them off after. Water speeds along deterioration as does intense sun. This is day of or max a few days before use stuff. Will check it out and thanks for the tip. I will use them to mark locations of Music stations along the route, more visible water station, mile marks, in addition to coning, where routes become unrestricted etc. He is launching a new web stie in April with some new products too.