Zack and Zoey Plaid Printed Fleece Vests with Ripstop Chests are warm dog vests with a protective nylon underside. Great for working dogs or any dog that wants to stay warm, dry and protected from the elements. Double layer fleece vests with ripstop nylon chests. This functional design provides warmth and protects pet undersides from snow, mud, brush and more. Easy fit design with Velcro® tabs along back. Material: 100% Polyester. Care: Machine wash in cold water on gentle cycle. Line dry. Measuring Guide: Back: Measure length of pet's back from the base of the neck to the base of the tail. Note: If the dog has a stout build or broad chest, select one size larger.