Birkenstock Boston Black Leather Soft Footbed Women's Clogs Leather Upper Imported eva sole Birkenstock takes the classic clog to the next comfort level with the Boston Soft Footbed. Soft premium black leather upper with a matching adjustable strap ensuring the perfect fit. The suede lined, foam padded contoured footbed will mold to the shape of your foot creating a custom footbed that supports and cradles you each and every step. Raised toe bar is designed to encourage the natural gripping motion of your feet, exercising your legs and aiding circulation. Flexible EVA outsole offers lightweight, shock absorbing support with lasting durability.