Keep your dog warm and stylish with the Outdoor Dog Jacket. Featuring a vibrant red and gray design, it's perfect for any adventure. The Dog Helios Arctic Blast Full Bodied Winter Dog Coat is a winter coat for dogs that is lined with Blackshark technology. This technology is a lightweight, water resistant, wind-resistant, snow proof, breathable, cold-repellent, impermeable, and tear resistant fabric. Here are some insights from user and expert reviews: Pros Warm Good weather resistance Lightweight General sizing guide: XL: 22.8 in. Length, 34.7 in. Chest Girth, 18.9 in. Neck Girth and from back of neck to tail area (in inches) 22-24 in.