Very gently used (see pics of the soles...I wore them once.) Birkenstock Gizeh Thong Sandals - Size 38 / 7.5 US - Matte Black This pair has BLACK buckles, which creates a more seamless, minimalist look than a pair with gold buckles IMO. Size conversion (U.S. Women's Size to Euro Size) size 35 = 4-4.5 size 36 = 5-5.5 size 37 = 6-6.5 size 38 = 7- 7.5 size 39 = 8-8.5 size 40 = 9-9.5 Description: • Buckled strap at side for a flexible fit • Thong toe • Slip on • Leather upper Made in Germany