Green 60s Heels - Midcentury Shoes by Galaxies
I don't find a size stamp - based on how these fit me (I wear 6) may fit size 6 1/2. Compare measurements to a shoe that fits you well.
9 3/4" long from toe to heel inside with ball of foot being 2 3/4" across. Heel is 2" Across. Heel is 3" tall.
No material contents named, feel like suede. Note wear in photos/video - Insoles are cracked at flex point, there's a chip on the green on one heel, soles are worn, etc.

This item is sold from an excellent, highly rated vintage boutique.