DO NOT match your physical measurements to the outside measurements of clothing.
Your best strategy is to measure an article of clothing that fits you well. Use those measurements to select clothing on eBay. Match measurements not size labels.
1. Waist: 37" waist across and doubled
2. Inseam 29.5" Inside leg - crotch down to bottom hem
3. Outside length 40" From waist band to hem
4. Thigh 27" Across upper leg at the crotch and doubled
5. Hem 18" Across bottom hem and doubled
PT122 - R