Directional stretch and stretch percentage are important features when choosing the right fabric for your project. Some patterns will call out specifically the stretch percentage needed for the pattern to fit the best. Stretch fabrics can have mechanical stretch, in that they have a natural stretch based on the way they are made and do not include Lycra Spandex. Fabrics made with Lycra Spandex often have a greater stretch, and better recovery.
2 Way Stretch refers to fabric