They're made of relaxed-fit denim with enough flex that can squat down to take measurements without a problem.
Men′s Midweight 2-Way Stretch Denim Jeans With Dungaree Pockets
RUGGED FLEX™ RELAXED FIT UTILITY JEAN
Men's heavyweight work jeans that are built to move.
Rugged Flex® Relaxed Fit Utility Double Front Jean
Carhartt Men's Rugged Flex Rigby Double Front Pant
Carhartt Men's Rugged Flex Relaxed Fit Double-Front Utility Jean
STEEL RUGGED FLEX™ RELAXED FIT DOUBLE-FRONT UTILITY WORK PANT
Men′s Denim Double Front Dungaree Jeans, These men′s jeans have all the ruggedness of work pants, but with the range of motion you′d find in
103329 Rugged Flex® Relaxed Fit Double-front Utility Jean
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Carhartt Rugged Flex Straight Jean (102804)
Carhartt Men's Rugged Flex Rigby Double Front Pant