Size M: The total height of the backpack-13.1", the recommended weight is between 0.0 and 3.0 kg (you must measure your pet’s length and weight together for an accurate reference). For more size information, please check our size chart photos. Suitable for cats, small and medium-sized dogs, mini poodle, mini schnauzer, mini teddy, chihuahua, height 45 and width 36cm Durable and comfortable material: made of breathable mesh and polyester fiber, light and comfortable, very suitable for outdoor travel, sightseeing, camping and hiking, etc. Adjustable shoulder straps and internal straps: Adjustable padded shoulder straps help reduce the burden. The extra buckle belt keeps the backpack stable. The inner rope with clip can be connected to your pet’s collar/safety belt to prevent your pet from jumping out or injuring itself. Make them safer Padded panel and removable bottom cover: The back and sides are filled with EPE foam to reduce the burden and provide you and your pet with more comfort.