Yes, Flex™ Denim uses a knitted fabric with added elastane. Unlike woven denim, Flex™ Denim offers four times the stretch. This makes the relaxed fit so comfortable you'll forget you're wearing jeans. No stiffness, no restriction, just all-day comfort.
The ideal length touches the ground with a slight pause, not so short that it looks cropped, not so long that it drags. If you have to choose between two lengths, the slightly longer version is better, as you can fold it up.
A fitted top, such as a tight T-shirt or a cinched blouse, creates a balanced silhouette. Crop tops also work well and accentuate a slim waist.