3:the wiring is what surprised me the most. It works excellent in rains and 40mph winds with our cargo bag in tow. ,but mostly there have been a few times the bar has slipped out of the hole even with the velcro secured. I got my Lanc sauna legging. Love the feel of the cork base of these sandals. Keep up the great work. Love these Birkenstocks. I ordered my normal shoe size and the fit was perfect. Easy to assemble, sturdy and love the organization of my closet now! I recommend the seller