Review on ROCKBROS Winter Cycling Shoe Covers - Windproof Bike Bicycle Overshoes for Men & Women, Thermal Warmers by Daniel Aboubakar

It definitely shows promise and for the price I'd probably try to get it to work. I ordered US10 and my toe is about half an inch. For the price, they're not terrible. Compared to a similar branded product from Castelli ($156), they're worth it. But there are big differences in the details. Castelli products consist of many layers of material to protect against cold, wind and water. This product is a simple single layer material that resembles neoprene. My legs were still numb at 44 degrees, which may just be due to the poor fit and the cooling of the legs from the air underneath. I chose a reputable brand because I bought it once and it works exactly how I wanted it to (doesn't go >20 degrees Fahrenheit deaf).