This boot is super cute and comfortable right out of the box.  I have wide calves and can really only wear booties.  These are great because they have a zipper on the inside of the shoe for easy on and off.  Additionally, there is a velcro closure on the outside by the embroidery that is adjustable so you can tighten or losen the shaft a little bit.  However, as stated, I have big fat calves, I didn't need to loosen this fastener at all.  The shaft is actually more open than it appears in the photo.  Anyone that maybe has fat little piggies and legs like I do, should do fine with these!  The footbed is very comfy (memory foam squishiness).  Who knows how long that cushiness will last, but right now they feel great.  The toe box seems perfect, not too narrow, not too wide.  I'm a solid size 9 women's and these fit perfectly.

My ONLY complaint - and this has ZERO to do with Jambu, but rather whoever fulfilled this order for Amazon - uh, people are gonna know you're selling them a used/returned by another customer product when you get the box and the shoes are inside, along with the little fabric pouches that each shoe is supposed to be in.  They were UNDER the shoes, along with trash (paper that had presumably been stuffed inside the boot shaft previously).  Don't sell me shoes that have been on someone else's feet!!!  And, if you're going to do it, at least don't be so obvious about it.  You should at least TRY to fool the unsuspecting customer like me by removing the trash and replacing the shoes IN their little fabric bags!!!