From Closet Core Patterns:
The Dog Coat is a free sewing pattern from Closet Core Patterns. The top portion is darted around the tush to create a curved shape around the hip (yes, dogs need darts too!) while the harness wraps under and velcros on top to keep your dog’s chest dry (while leaving the nether regions free and clear). This little project is just the thing to do over the holidays when it gets yucky outside and is a good project for tackling those mounting scraps. It’s also a huge money saver since we all know how spendy nice dog clothes are!
Suggested fabrics: There are lots of fabric options for this coat including canvas, wool, and waterproof fabrics. You can increase the warmth with your lining fabric (sherpa and fleece are lovely!) or use a regular woven for the lining and quilt batting as the middle layer, which will give you the opportunity to do some quilting.
Sizing: Available 11 sizes to accommodate a small dog (think Yorkie or Chiahuahua) up to a large Lab. See size chart in photos.