Birkenstock SUPER BIRKI 068011 Polyuréthane Noir Size:37 Flexible PU outsole Flexible PU outsole Opening: 19" Size Width Length Width From To From To 35 Regular 218 225 85 89 Narrow 216 220 81 84 36 Regular 226 230 87 91 Narrow 221 226 83 86 37 Regular 231 234 90 98 Narrow 227 232 84 89 38 Regular 235 242 92 100 Narrow 233 240 86 91 39 Regular 243 247 94 102 Narrow 241 245 88 93 40 Regular 248 254 96 104 Narrow 246 252 90 95 41 Regular 255 262 97 105 Narrow 253 260 91 96 42 Regular 263 267 98 107 Narrow 261 265 93 97 43 Regular 268 274 101 109 Narrow 266 272 95 100 44 Regular 275 282 103 111 Narrow 273 280 97 102 45 Regular 283 289 105 113 Narrow 281 287 99 104 46 Regular 290 297 107 115 Narrow 288 295 101 106 47 Regular 298 302 109 117 Narrow 296 300 103 108 48 Regular 303 307 111 119 Narrow 301 305 105 110 49 Regular 308 314 113 121 Narrow 306 314 107 112 50 Regular 315 322 115 123 Narrow 315 322 109 114 03 Cross arch support:Helps shift pressure from the middle to the front of the foot