The Dog Helios ® Altitude-Mountaineer Wrap-Velcro Waterproof Dog Coat is Inner-lined with exclusively developed Blackshark Technology, this innovative fabric is Lightweight, Waterproof, Windproof, Snow proof, Breathable, Cold-Repellent, Impermeable and Tear Resistant. The Helios outer shell is furthermore completely PU coated above the Tougher-Grade Polyester with 3 additional layers of Wear and Tear resistant protection. Water completely wicks off similar to a Lotus Leaf effect. These Dog coats feature a Polar Fleece Interior that comfortably hugs the dogs body for added warmth and superior comfort. Features a special wrap-over connecting Velcro enclosures which Velcro around both the Belly and Chest areas for easier on and off accessibility. Features a leash slit hole by the neck area. Furthermore this dog jacket features 3M Reflective lining for added safety during night walks. Additionally this Dog Coat Features accented Embroidery and a print on the Outer shell. Get Outdoors with Helios Dog! Available in Multiple Colors and Sizes. Sizing Guide - From Back of Neck to Tail area ("In" Inches) 8" - EXTRA SMALL 10-12" - SMALL 14-16" - MEDIUM 18-20" - LARGE 22-24" - EXTRA LARGE