A little Christmas surprise: In every product we send out in the run-up to Christmas, you will find a beautiful Christmas card. We wish you a unique and merry Christmas! BUILT-IN HARNESS: Harness is firmly sewed on back of the puppy jacket, provides convenience for dog walking. Straps are adjustable for a comfortable fit, strengthened seams and sturdy D-ring can withstand strong pulling force from your puppy, make everyday walks more enjoyable! WARM & PROTECTION: Outer waterproof and windproof material can protect your fur baby in windy, snowy or rainy days. Inner thickend fleece material is soft and skin-friendly, can effectively trap heat and keep your puppy warm in cold winter and outdoor activities. Collar and long tail design provide better coverage for your pup's neck, back and tail. EASY WEAR & SNUG FIT: Step-in vest design with zipper allows for an easy wear, saving the trouble for putting your puppy's legs into sleeves. A cloth layer under the zipper prevent rubbing or chafing on your puppy's body and will not stuck fur. REFLECTIVE & SAFE: Reflective trim on the harness straps can keep your pet highly visible and safe in low-light conditions. Suitable for cold weather days and all kinds of outdoor recreation such as walking, hiking, camping, trekking, etc. MEASUREMENT: S: Back Length: 22cm, Bust: 36cm, Neck: 26.5cm, M: Back Length: 26cm, Bust: 40cm, Neck: 29cm, L: Back Length: 30cm, Bust: 44cm, Neck: 31.5cm, XL: Back Length: 34cm, Bust: 48cm, Neck: 34cm, 2XL: Back Length: 38cm, Bust: 52cm, Neck: 26.5cm Neck: 36.5cm. The dog winter jacket is suiatble for small and medium puppy. Please measure your pet's chest girth, neck girth, and back length and then refer to our size chart to get a suitable fit.