I bought these new, but my child outgrew them. Size: 15.0 cm (There's no size marked, but I measured the insole and it's 15.0 cm.) The widest part of the insole is 5.5 cm. Please see the photos. Height from the sole: 14.0 cm Inner diameter of the opening: 21.5 cm * There's a hole from a tag on the inside of the shoe. * There's adhesive residue from a sticker being removed.