The Cloudshell Vest is crafted with small to medium-sized dogs in mind, offering the perfect blend of lightweight warmth and versatility. Its innovative insulation keeps your pup cozy on every adventure, while the use of recycled fabrics reflects a commitment to environmental stewardship. Designed for practicality, this vest packs neatly into its own pocket, making it an essential companion for travel and unpredictable weather. Comfortable, sustainable, and adventure-ready—this vest has it all. Choose the Larger size if your pet grows fast or between 2 sizes. Size Back Length Chest Circumference Global Size (Ref.) XS 7.9" 11.8" (XXS) S 9.1" 13.8" (XS) M 11" 15.7" (S) L 12.6" 17.7" (M) XL 14.6" 19.7" (L) 2XL 17.3" 22.8" (XL) 3XL 18.9" 25.2" (2XL) 4XL 20.5" 27.2" (3XL) 5XL 22" 29.1" (4XL) 1. Body: Measure from the base of the neck on the back where the collar sits to the base of the tail. Pull the tape snug but not tight. 2. Neck: Measure at the base of the neck where the collar sits. Pull the tape snug but not tight. 3. Chest: Measure around the widest part of your dog’s ribcage. This is usually just behind their front legs. **Please measure your pet correctly and check the size chart before choosing the size.