SkechersWomen's go 600-Glistening Slide Sandal

Are the sizes of the sandals the same as the trainers? I wear a 6 in skechers trainers but with sliders because i have wide feet i usually buy a 7.

Are they flexible,underfoot

When you will have a size 3?

I am usually a size 7 but fit in size 6 sketchers, would this be the same for the sandals?