The precise method to follow for making a knitwear collar with 20% stretch content is explained in this technical file. The precise written instructions and detailed sketches will bring you a full understanding of the volume to define for a knitwear collar in function with the fabric used and in this particular case, a fabric with 20% stretch. The stretch content of a fabric very often requires checking as it can greatly impact the style of the garment being made. This base will allow you to carry out various transformations if you desire to make your model evolve. This technical file can be used in association with: The technical file of the knitwear base with 20% stretch The technical file of the knitwear sleeve with 20% stretch.