Giro started the trend with their laced shoes. Bont got a aeroshoe with laces. Specialized developed a lighter version than Giro and with an aero sleeve to make it more aero than Bont.
Berk Composites makes a lighter shoe, more classic than all of the others:
Under 150g in size 44. Costing 350€ and is available to pre-order now for delivery in the end of the year.