Seattle Seahawks Contoured Flip Flops - Official NFL 2013 Unisex Flip Flop Beach Shoes Sandals slippers size XL Seattle Seahawks Contoured Flip Flops - Official NFL 2013 Unisex Flip Flop Beach Shoes Sandals slippers size XL XL = (Men 12-13) Soles measure approximately .75" thick Quality embroidery Men's sizing: SM fits 6-7, MD fits 8-9, LG fits 10-11, and XL fits 12-13