- THE ROW ss spring and summer new thong flip-flops sandals are simple style but have a high-end aura. They are definitely a must-have this year. They are absolutely essential for daily vacations. You can wear them casually to bring your own aura. Appears Upper: Imported silk cloth Lining: Sheepskin Sole: Genuine leather outsole Size: 35-39 (custom-made sizes 40 are non-refundable),