The https://truereligionn.us/ denim used in the Geno line typically blends cotton with a small percentage of stretch fiber. This combination gives the jeans enough structure to hold their shape while still allowing natural movement. During testing, sitting at a desk for hours or bending down to pick something up never felt restrictive, which is a common complaint with stiffer, non stretch denim.
The weight of the fabric feels medium to slightly heavy, which is good news for anyone who wants jeans that do not feel flimsy after a few washes. Thinner denim tends to lose shape quickly, but this fabric held its structure through repeated wear and wash cycles without sagging at the knees or seat.