I've been using these shoe covers from Taiga:
https://www.taigaworks.ca/cart.php?m...ct_detail&p=65. The XL is pretty roomy over my size 48 Lake mb shoes. They're warm too. Last morning last week, the low on my commute was about 5 degrees, but my feet stayed warm with a pair of liner socks, thicker socks and the taigas over my shoes.