I live in Hawaii, and I hike at least once a week, usually even more frequently than that. My hikes are usually anywhere between 3-8 miles, and usually include an elevation gain of 600 to 2,000 feet. I needed a top-of-the-line child carrier that was lightweight, sturdy, had convenient compartments, and MOST IMPORTANTLY was comfortable enough that my daughter would sleep in it. Literally money was no object, I just wanted the best carrier I could find.I did so much research and am so satisfied with this carrier, I'm leaving a really detailed review for all the other parents out there who may be researching like I was. I am in LOVE with this carrier, and so are my children. It is truly one of the best baby purchases I have ever made. There are so many pros, I will try and list them all here:1. Child Cockpit Comfortability - It has extra padding and very soft fabric around. My daughter (who is notoriously not a great sleeper) almost always falls asleep in this carrier. This, to me, is the best part of this carrier, and ultimately the reason I purchased it. This is what sets this carrier apart from all others. I could not find any other carriers that had this quality of child seat that would facilitate naps.2. You can adjust the tightness of the child cockpit so that it is tighter for when they fall asleep. Their head ends up more supported than other carriers.3. The side panel opens on the backpack so that your kids can climb in. My 2 year can climb right in herself, which is so convenient, rather than trying to squeeze them in and get little chubby legs to fit in the exact leg holes. You can adjust the side panel as well.4. Adjustable for height of your child AND your own height (based on torso length). This did take me a bit of time to figure out the adjustments. I found some Deuter videos on YouTube that I watched to figure out the adjustments, and it is perfect now. Make sure that is tight on your hips and your hips are carrying the weight. You can also adjust how tightly the carrier fits against your body, which is really nice so that it doesn't feel like they are swaying around on your back.5. Very comfortable for my shoulders and back. I had a lot of back problems and shoulder problems postpartum, and I am always nervous about using a carrier, but no issues with this one.6. Belt compartments are very convenient. One fits a larger phone, which is nice to have easy access to on your belt, rather than having to take your kid off your back to access your phone. The other compartment has a hook for keys, also convenient to have access to right there.7. Kickstand is very convenient and pops out easily.8. There are little feet straps for your baby. My toddler doesn't like them, but they are nice to have as an option.9. Handhold on the back of the carrier is nice for moving the backpack around with a kid already in it, or transferring from one parent to the other.10. This backpack is sturdy enough it can even hold my 5 year old.11. Mesh back keeps this cooler than other packs.Cons:1. Less storage than the other hiking backpacks I've used, but it has always been enough for me. I am even able to fit a kids travel potty chair in the top compartment with no issues (sorry if that is gross, but we're potty training, and that means the chair goes on hikes)2. There isn't a great place to store the sunshade.3. The sunshade rests on the top of my head when walking. this is minimal and really doesn't do anything other than feeling it on me. It does not push my head forward when looking uphill like other models, as it goes over my head. I guess this is actually another pro, because this was a big issue I had with my Kelty model.