Features: Cute hamburger shape. For your dog to carry his/her own supplies&accessories while you go hiking. Large enough to holding treat, toy, poop bags, and other supplies. Your Dog can Take Dog's Belongings By Dog Itself, it will generally behave better. We recommend that you use soft tape to measure your pet to find the most suitable size~ For walking, outdoor travel, hiking, camping, training and other outdoor uses. Specifications: Material: Polyester Size:S Neck:24-31cm(9.45-12.20inch) Bust:32-41cm(12.60-16.14inch) Leash Length:150cm(59.05inch) Recommend Weight:2-3.5kg Size:M Neck:31-41cm(12.20-16.14inch) Bust:41-50cm(16.14-19.68inch) Leash Length:150cm(59.05inch) Recommend Weight:3.5-7kg Size:L Neck:41-48cm(16.14-18.90inch) Bust:47-54cm(18.50-21.26inch) Leash Length:150cm(59.05inch) Recommend Weight:7-10kg Size:XL Neck:48-54cm(18.90-21.26inch) Bust:54-64cm(21.26-25.20inch) Leash Length:150cm(59.05inch) Recommend Weight:10-15kg Package Includes: 1x Dog Self Backpack and Lesh Set note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.