CobianA.r.v. Ii mens Sandals

When new, will they straps stretch over time? got for my son but they are really tight & uncomfortable so he won't wear them.

How do i order a the various widths listed and the sizes varying are concerning I've always bought 11. 12 correct size?

What size are these? I am looking for size 10 in the Chocolate.

I want to reorder but forgot which size I ordered first. My current pair measures 11 and 1/4”