This is my second pair of Roam sandals/slippers. I wear a size 41 in Roam. For reference I am 10 in Nike and 9.5 in adidas. The fur is so soft and fun. These have good, supportive, snug fit- no flopping when walking. Great for walking neighborhood, house, errands etc.
Rated -1 on a scale of minus 2 to 2, where minus 2 is Runs Small, 0 is True to Size and 2 is Runs Large