Birkenstock Betula 3-Strap Turquoise 9 40 Leo Soft

I am a first-time Birkenstock buyer, so I bought these more affordable non-leather versions on Posh. Unfortunately, they are too big and I need to go down a size. I did some research and I believe the style is Leo Soft. They appear to be made of Birko-Flor, which is Birkenstock's vegan alternative to leather, and Birko-Felt for the lining. Very clean except for the soles. See manufacturer's description below. Add some comfort and warm-weather style to your summer ensemble wearing the Betula® Licensed by Birkenstock® Leo Soft sandal. Birko-Flor™ upper is made of acrylic and polyamide felt fibers with a smooth leather-like finish. Features three straps with adjustable buckle closures. Leather-lined, contoured footbed molds to the shape of your foot creating a custom footbed that supports and cradles with every step. Raised toe bar encourages the natural gripping motion of your feet, exercising your legs and aiding circulation. The soft footbed features a foam layer inserted between the cork layer and suede liner. Microscopic air bubbles cushion your feet while providing moderate arch support. Neutral heel profile and deep heel cup keeps the natural padding of your foot under the heel, distributing your body weight more evenly. EVA outsole offers lightweight, shock absorbing support with lasting durability.