They’ve warned hikers that “crocs and gym trainers won’t survive the hills” and that they will need appropriate footwear and socks. Posting on Facebook, Police Scotland Forth Valley said: “The trails around Stirling—from the bogs of the Ochil Hills to the rocky, stepped path of Ben Ledi—demand proper footwear. If they are relatively flat (like road running shoes or fashion trainers), you will slide on wet grass and mud. “Ditch the crocs: Crocs, Flip flops and similar footwear are not suitable for the terrain. “The golden rule of socks: Never wear thin ankle socks”.