Pre-baffled stretch ripstop for ease of movement.
Pre-baffled construction means the baffles that contain the down are woven into the fabric itself, so there is no need for exterior stitching, keeping the surface of the fabric completely smooth. This process also means down feathers will not leak through needle holes in the seams, as often happens with traditional down pieces. And, the pre-baffled stretch ripstop has tremendous ease of movement.