2-Pack Men's 5-Pocket Flat-Front Stretch Twill Chino Shorts (Size 30-42)

I purchased two (2) sets of these and each set had a pair that fit perfectly (size 40) as ordered, the other pair was (size 36); although it had size 40 on the tag. I ordered the second set because of the size failure and it had a pair that fit perfectly (size 40) and the other pair was (size 38) although it also had size 40 on the tag. They were advertised to be stretch pants, but there is no stretch in the waistband at all.

The green shorts fit great the blue was snug not sure why both same size