Rollasoles are a crazy comfortable and affordable shoe that literally ROLL into themselves.  They come with a carry pouch to be used as a bag or wrap around your shoes.  Super true to sizes below.

Sizes:

Small - 5 1/2 - 6 1/2

Medium - 7 1/2 - 8 1/2

Large - 9 1/2 - 10 1/2

XLarge - 11 1/2 - 12 1/2