Felled seam, or flat-fell seam, is a seam made by placing one edge inside a folded edge of fabric, then stitching the fold down. It includes a topstitched finish. It is useful for keeping seam allowances flat and covering raw edges.
The flat-felled seam is the type of seam used in making denim jeans, although it appears inside-out to reduce stitching. It is also used in traditional tipi construction.
There are flat-felled seams and lap-felled seams.
- Moyes, Patricia (1999). Sewing Basics: Creating a Stylish Wardrobe With Step-By-Step Techniques. Taunton Press. p. 94. ISBN 9781561582662.
- Hastings, Honey C. (Spring 1973). "Make & Fix It". Backpacker: 15.
- Holley, Linda A. (2007). Tipis, Tepees, Teepees: History and Design of the Cloth Tipi. Gibbs Smith. p. 87. ISBN 9781586855116.