Excellent for airline carry on travel (check airline restrictions before purchase). A latch inside to hook to the animal's collar to keep them from abruptly jumping out or otherwise escaping when you open the backpack. Ventilated Zipper mesh door and front pocket which is convenient for using. Removable bottom and easily clean up,mutli-usage fits your need as backpack,rolling carrier ,tote carrier and car seat carrier. Hold Pets up to 17 Pounds. Product Dimensions: 16.9'L x 11.8'W x 16.9'H.