Im female. My feet are 9.75 inches. What size do i order. ???

My foot is 9 inches and the size 7 fits perfectly. Size chart measurement shows the size 7 shoe is 10 inches heel to toe.

is this size women's 7 or women's 8? the info is women size 7, but the selection box is women's size 8.

Sizing is a question for the manufacturer. My knowledge of this slide is limited to good comfort, wears out after 7-9 months of daily wear, and sole becomes slippery when wet. So not recommended for a pool slide.

How can i be guaranteed the oofo slide ons are from korea?

Hi Karen, Thank you for reaching out! OOFOS are made in Korea and Vietnam to our closely monitored specifications. The OOmg is made and constructed in China. Amazon handles our fulfillment, so we have no control over whether they shipped the made in Korea or Vietnam to you. Best, Recovery Footwear

Questions for manufacturer - do Oofos use any recycled rubber (aka used waste tires)? Are they sprayed with Microban (aka triclosan)?

Sorry, but I have no idea. Sounds like a very interesting question. I tried a pair of Oofos on in the mall and they were so comfortable that I decided to try a pair. While very comfortable they did make my feet sweat at times.