Guinness and I are flying to NJ next weekend, so I've purchased a Sturdibag for the journey. It arrived today, and WOW. It's exactly what I want in a carrier. It's lightweight, roomy, sturdy, flexible, well ventilated, and has great safety features - it buckles into a car, has a d ring and short strap to clip to a harness so your dog can pop his head out the roof but can't escape, no sharp edges inside, and high quality fleece pad for comfort.