How to Use: How to measure your dog: All you need is a soft tape measure or a ruler, and a flexible item such as a rope or ribbon that can be wrapped around the dog. Bust: A few centimeters around your dog chest, just behind their front legs. Length: From neck to tail. Do not exceed the maximum length, being careful to leave two fingers wide for your dog. Specification: Item Type: Pet Front Backpack Material: Composite Tarpaulin, Loop Fleece Lining, Webbing, Buckle, Hardware Buckle Color: Black Package List: 1 x Pet Front Backpack 1 x English Manual Note: Manual measurement, please allow 0.7‑1.2in error.