Bests & Worsts Reviews from Amazon

I was very excited to receive these because of the previous reviews, and I was mildly disappointed when they arrived. The reviews I read suggested ordering up a size because they are snug. I am normally a size 9 so ordered an XL.I took a few pictures to illustrate how much extra space I have (I used a glue stick as an indicator - it's a jumbo glue stick, not a small one). The slipper also stretches quickly and without fix so I sort of feel like I'm walking with milk cartons on my feet. It's always a little tricky to know which guidelines to trust in terms of size - the distributors or the customers.