So what if the world goes Ga Ga over Levis. Its made of tough canvas, nowadays of denim : originally designed for cowboys who rode horses & for which purpose the tough & thick canvas or denim lasted long enough. The cotton fabric absorbed body sweat , so it suited the customers well.
However, the item is banned in some clubs, & is rarely worn on formal occasions. On the other hand, people buy it blindly at high cost - in stone washed, or faded designs, when it is known that the color is bound to fade anyway after use. The whole purpose is defeated, & the product sells just because of inertia of it having becoe a fad.
The most comfortable trousers are the salwar type : baggy in thigh & calf area, short around the feet, so it does not get entangled while walking or running, & allows enough flexiility for exercising, & for a variety of movements.
I get my trousers tailor made from cotton corduroys, with stitched adjustment strips on the waist, & a variety of pockets, watch pockets, for pens, hankys, purses, coins, notes, & no pockets on the hip.