I wear a 34 relaxed fit Wrangler jean, so I bought relaxed fit 34 in Wrangler Riggs. Side-by-side the waist is undersized from the jean and noticeably tighter when worn. The relaxed fit must be in the seat but I'd probably have to get a 36 waist and wash them to shrink to fit but normally that makes the legs like balloons, so much extra material with a 36. You might consider a larger size than you normally wear for a comfortable fit.