Great bootie! - Western Mountaineering Down Booties - Unisex

I originally went one size down based on other reviews but I ended up returning the smaller size and purchased the size that fit my foot according to the size chart. You could size down, it seemed like it would have worked, but I could feel the front of the bootie with my toes even while walking a short distance around my bedroom. Since down doesn't insulate well when it's compressed I went with my size according to the size chart to give the insulation a little more space. I am a mens size 9/10 and bought the size medium originally, returned for a size large. Hope that helps someone!