WinterCampers.com has written Dog apparel about winter camping with your dog in past posts. In addition to the advice offered by Scott in that posting you might consider dogwear.The Ruff Wear Climate Changer is Dog apparel a Polartec Classic 200 recycled fleece great for dogs in cold conditions. The Climate Changer is lightweight, breathes, dries quickly, is machine Dog apparel washable and comes with reflective trim. It covers part of your pooch¡¯s front legs as well as most of its body and its entire neck and chest. Sizes range from XXS for a girth 13-17 inches up to an XL Dog apparel for dogs with a 36-42 inch girth.