NWOT No Boundaries NOBO Clear Gray Plastic Rubber Thongs Sandals Flip Flops 7

New without tags No Boundaries NOBO clear thongs/sandals/flip flops have size 7 on them but they are maybe a 6.5. I got these for my mom who takes a 7 and they were really tight on her feet. On the Priority Mail envelope they look greenish but on the bear skin you vacant see they are gray. I’m not sure where they were made or the material.