I use these handy velcro buckle straps from Amazon. Works well to keep bike folded, can even wheel it around a bit while folded. They come assorted lengths and can be used for a ton of other uses. https://www.amazon.com/dp/B07W97K7N1/ref=cm_sw_r_cp_apa_fabc_Jrc4Fb84YZ03M?_encoding=UTF8&psc=1