Outdoor Research Goldbar Pants

Water resistant Abrasion Resistant Movement-mirroring stretch Dwr treatment Upf 50+ Garment washed 5-pocket styling Metal shank button closure Right thigh drop-in pocket Gusseted crotch Double fabric at hem I’m honestly not sure if I should put 31 or 32 for the waist size. Outdoor research says 30 in tag should be 31 but I think it might fit 32 better.