The Roll Up Carrier is approved by most major airlines; Visit Guaranteed on Board to determine if dimensions are approved by your airline * Four mesh panels for ultimate ventilation; Comfortable fit under most airline seats * Top and side entry; A convenient shoulder strap included * Roll up flaps on three sides for added sense of security and privacy * Pets up to 16-pound * A convenient shoulder strap included * Comfortable fit under most airline seats * Four mesh panels for ultimate ventilation * The Roll Up Carrier is approved by most major airlines * Top and side entry * Visit Guaranteed on Board to determine if dimensions are approved by your airline