Birkenstock Birkis Brown Glitter Tahiti Sandals Narrow Size 39 Women's 8/Mens 6 Good used condition 7.5/10. Please see any and all pictures and ask any and all questions before buying. Leather Slip-On The Birkenstock Birkis Brown Glitter Tahiti Sandals in Narrow Size 39 (Women's 8/Men's 6) are a stylish and comfortable slip-on sandal perfect for travel and casual occasions. With a flat heel and leather upper material, these sandals provide all-day comfort and support. The brown color with glitter accents adds a touch of glam to the classic Birkenstock design. Whether it's winter, summer, fall, or spring, these sandals are a versatile option for any season. Made by the trusted brand Birkenstock, these Birkis Tahiti sandals are a timeless addition to any wardrobe.