https://www.altrarunning.com/men/altra-olympus-25
According to Altra's website and Running Warehouse, these have a Zero Drop platform, but here on Massdrop it says it has they have a 5mm drop. Altra's website also says "Insole: 5 mm Contour Footbed." So, there's an insole in these shoes that have a slight drop to them, but the shoe is otherwise flat?