768 × 768
Source:https://www.walmart.com/ip/TOWED22-Flat-Shoes-For-Women-Flats-Women-Pointed-Head-Ballet-Flats-Comfortable-Soft-Memory-Foam-Insole-Dress-Shoes-White/2715427818
240 × 240
Source:https://www.kohls.com/catalog/womens-dress-flats-shoes.jsp?CN\u003dGender:Womens+Occasion:Dress+Product:Flats+Department:Shoes
835 × 700
Source:https://40plusstyle.com/how-to-wear-flat-shoes-and-not-look-frumpy/
400 × 400
Source:https://www.ebay.com/itm/403901385870
750 × 750
Source:https://www.asos.com/us/asos-design/asos-design-wide-fit-verity-loafer-flat-shoes-with-trim-in-black/prd/202461114
600 × 480
Source:https://www.vionicshoes.com/women/flats.html
1000 × 1000
Source:https://www.obtaom.com/products/obtaom-round-toe-women-flat-shoes-slip-on-girls-dress-black-ballet-flats-red
666 × 1000
Source:https://www.fashiongonerogue.com/style-guide-how-to-style-flats-winter/
800 × 800
Source:https://www.aliexpress.com/item/1005004441680278.html
724 × 479
Source:https://www.pinterest.com/pin/546131892286045159/