OOFOS OOFOS OOmy Zen Black Recovery Shoe Slip-On - see measurements and read fully

Comfort-focused slip-on design. Soft black knit upper for flexibility. Bright neon green brand tab for contrast. Thick white cushioned sole for support. Easy on-and-off style. Shows signs of use. Stains and a couple of tiny rips/holes on the white part of shoe. My receipt shows they are women’s size 11 (see photo) but I can’t find the size on the actual shoe. Please check measurements on photos and also the signs of use.