Women's Birkenstock Oswego Slip On Shoe in SandcastleFrom Birkenstock, the Women's Oswego Canvas Slip On Sneakers feature: Canvas upper Slip on design Removeable contoured cork footbed that supports the arch of the foot and features a deep heel cup for all day comfort Fabric lining Rubber outsole for traction and cushion Flat heel Birkenstock footwear is made in European whole sizes. The style selected is a Birkenstock narrow footbed that will fit most medium feet.