Spring Leash ToGo Spring Leash to Go Springleashtogo is a u.s. patent product for the safety biking with your dog(s) Stainless steel tube(bar) and iron holder/screws(bolts/nuts) Quick-lock button system are all sturdy for daily usage Patent Long Spring downward makes Dog-Pull leverage lower, so biker can remain stable while biking Fits all kinds of bikes and available spring-mounting on either side