High Quality Content by WIKIPEDIA articles! Ripstop fabrics are woven fabrics often made out of nylon, whilst using a special reinforcing technique that makes them very resistant against tearing and ripping. During weaving (thick) reinforcement threads are interwoven at regular intervals in a crosshatch pattern in the fabric. The intervals at which reinforcement threads are interwoven are typically 5 to 8 millimeters (0.2 to 0.3 in) apart. Thin or lightweight ripstop fabrics get a 3 dimensional structure due to the thicker threads being interwoven in thinner cloth. Older lightweight ripstop-fabrics display the thicker interlocking thread patterns in the material quite prominently, but more modern weaving techniques make the ripstop threads less obvious. The same effect can be achieved by weaving two or three of the fine yarns together at intervals.