Scuba Structure and Stretch
The structure of scuba fabric is created by a construction of a very fine double knit. One layer is knitted in one direction, one in the other. The fabric holds a good amount of stretch along the bias and horizontal points, with a small amount vertically.
This simple method creates a very clever paradox as the fabric is both stretchy yet structurally it holds well. The stretch on the fabric is mainly along the bias and horizontal points, with a small amount on the vertical.