The UB121 is our skinny fit: skinny seat and thigh with a straight leg cut and sewn from 21oz raw indigo selvedge denim. The Sanforized 21oz fabric is around twice as heavy as most denim, making it hardwearing and rigid when new but will soften and fade beautifully when broken-in. Signature blue ear selvedge ID. Unbranded leather patch. Union Special chain-stitched hems. Hidden back pocket rivets. Copper tin button fly. Made in China/Macau. Please use the measuring guide below to determine your best fit For detailed information on how to use the measuring guide, see this page . TAG SIZE 27 28 29 30 31 32 33 34 36 38 40 42 WAIST 28" 29" 30" 31" 32" 33" 34" 35" 37" 39" 41" 43" FRONT RISE 10" 10.25" 10.25" 10.5" 10.5" 10.75" 11" 11" 11.25' 11.5" 11,75" 11.75" BACK RISE 14.75" 15" 15" 15.25" 15.5" 15.5" 15.75" 16" 16" 16.25" 16.5" 17" UPPER THIGH 11" 11.25" 11.75" 12" 12" 12.25" 12,5" 13" 13.5" 14" 14.25" 14.5"" KNEE 8" 8.25" 8.5" 8.75" 8.75" 9" 9.25" 9.5" 9.75" 10.25" 10.75" 11.25" LEG OPENING 7.75" 8" 8" 8.25" 8.25" 8.5" 8.75" 9" 9.5" 10 10.25" 10.5" INSEAM 34" 34" 34" 34" 34" 34" 34" 34" 34" 34" 34" 34" Measurements are in inches | A variance of +/- 0.5" is within tolerance