I bought my pet carrier a few weeks ago, and I couldn't be happier with my purchase. Reading other reviews, I was anxious about the issue with the zippers being stuck, but I experienced no problems. I have two indoor cats (one 5 lbs and the other 20), and they can now safely go outdoors, and they love to go for a jog with me. The front wheel locks from its normal swivel position to a straight-on wheel be steadier for faster speeds. The set up was very easy, and I was pleasantly surprised by how my pets took to it. There is plenty of storage space below and good ventilation through the netting enclosure. I don't know if it would hold 45lbs very well because the bottom seems like it would be prone to sink down, but other than that cautionary note, I have no complaints about this product, and I would definitely recommend it to anyone wanting a safe and cute way to take your pet outside.