I design and make dachshund sweaters, snoods and harnesses for small to medium dogs. I keep in mind the importance of fit, fiber and keeping the garment on. Our Michigan weather made it particularly important to find a way to keep Frodo warm and dry. Commercially made dog clothes just do not fit a long body with a deep chest and short legs.
I use many natural fabrics along with some blends. Wool is the favorite in my house, but I also sew with silk, cashmere, mohair, cotton and also blends of those fibers. All sweaters and coats are sewn from re-purposed first quality knit fabrics. They are pre-shrunk before cutting and sewing and are therefore machine wash and dry when finished.
Harnesses are made of new cottons or cotton blends and reinforced with interfacing. The harnesses are also reversible, so it's like 2 for 1. They are easily adjusted using hook 'n' loop closures and guaranteed to fit, stay on and be comfy.