Not sure why these are so popular we can’t use it at all for our dog. If i had paid attention to the design i would have noticed the top opening cannot be adjusted so there is only a very limited sized dog where this pack will work. We tried a little makeshift platform inside and all kinds of mods but unfortunately this pack is going to donations.

It’s super comfy for the dog and generally for the person wearing the back pack. One flaw that easily can be fixed is that The hard plastic on the bottom makes it sore on the lower back if carried for two days in a row. So there should be padding on the plastic as well.

I needed to transport my dog on the plane and this backpack is perfect! When we go out, she actually likes to stay in the backpack as a safe place.

The bag is excellent quality and well designed. I secured the Secured bag onto my bike and my dog now loves joining us on bike rides. I like the fact he’s on his feet rather than placing stress on his spine. Because the bag is attached to the bike, he feels very safe and secure.

I love this backpack and use it all the time, I've had it for 3 months now and its gone with me on a couple of flights as well as many bike rides and hikes and even a 10k. I chose the red one for extra visibility. I also like that I have a spot for my laptops, and his water bottle. I ride with him tethered in with the strap on a safe no-escape harness. I would however pay twice as much for the exact same backpack if i could get it with sturdier materials. Instead of a plastic bottom with fiberglass rods something stiffer that could handle if I fell off my bike and kept him from being potentially crushed, like a safety roll cage, but I haven't found anything yet that offers that level of stability.

Decent pet backpack. Not great visibility for the furry friend.

This is a well designed unit that works front or back ( thanks to the keeper strap) , I agree from others the size of the hip padding could be made more substantial but for small dogs like ours who is about 6 lbs it works fine and she enjoys it. We purchase it as our Yorkshire terrier went blind at 32 months old, and we needed something she would be secure in wearing it on your front or your back.

If you are taking a small dog (e.g. <20 lbs) for short periods, very occasionally, the G-Train may be okay. The G-Train is NOT designed for regular use carrying a dog >20 lbs for more than 5-10 minutes at a time. I use the G-Train 3-4 times per wk, including 10 min bike rides to/from trailheads, with my miniature poodle (24 lbs). Despite adjustments and multiple repairs, the pack is very uncomfortable and falling apart in <1.5 years. (It is less comfortable than a well designed, 75 lb expedition pack.) WEAK DESIGN: The skimpy hip belt and shoulder strap design doesn't allow the dog's weight to be put on your hips. The shallow, gaping side pockets don't accommodate even small water bottles (despite promotional pics). WEAK CONSTRUCTION: Many key seams are single stitched and failed/pulled apart: straps, handle, an inside pocket sewn onto really thin textile without any reinforcement…. Multiple broken components: zip track for dog's head/window, multiple buckles, zip tabs, sternum strap… REDEEMING FEATURES: This may be okay, perhaps v good for occasional use for <20 lb dog for short trips. It looks great and there are good features, e.g. generous zipped 2nd/storage pocket; ample rugged mesh vents, the big half moon zip for dog and storage pocket has a very robust zip (in contrast to the poor quality window zip). There is a great need for a good dog backpack. With some design modifications and more rugged construction/materials, the G-Train could be good. Ditch the branded buckles for replaceable ones. To accommodate 20 to 25 lbs or 30, an additional size would be needed.