Birkenstock Oswego Slip on SANDCASTLE | Fox Valley Birkensto。NEW BIRKENSTOCK Oswego Unisex Tan suede slip-on shoe in sandcastle Coastal Aesthetic Size 40 EU Narrow US sizes: Women 9-9.5 Men 7-7.5 Birkenstock\'s Oswego sandal delivers timeless comfort with its signature contoured footbed, engineered to support your natural arch and promote proper alignment. Crafted from premium suede leather in a versatile taupe hue, this unisex style transitions seamlessly from casual outings to relaxed weekends. Core Aesthetics • Coastal Grandma • Clean Girl • Granola Girl / Gorpcore • Scandi Style • Quiet Luxury Vibe Keywords • Earth Tones / Neutral • Boho / Bohemian • Preppy / Cape Cod • weekend at the vineyard style. • Organic • Euro-Summer • Capsule Wardrobe Essential