Sidewise, they are snug, but I have not had them long and Im sure they will stretch, as slippers tend to. I really hope these ones last awhile. Ive had that pair for about four years and it was time for a new pair; I ordered 11 again despite the reviewes. FitFlops are the best! Couldnt be simpler to use. He is definitely getting use out of them. Immediately Senhiser, Beyerdynamic, and Audio?Technica stood out. but the overall stage was quite detailed and dynamic. These phone bags work great on the different bikes and frames that 4 of my family members have. However, the Buds will NOT fit in the charging case with these tips attached.