The extreme mister is a great idea. It has worked fairly well for me when it's hot and I'm on my bike. 'm having a little trouble with the mister tip not working. Instead of a mist, i get a small stream of water shooting off to the side. When I do get it working it does what it's supposed to do, keeps you cool. The bladder is small so I switched it out with a large one. A simple process. I especially like the vest. All the extra storage room is great. Several pockets in front and an extra large one on your back. Overall I'm glad I purchased it.This would be a great product if it would hold water. The attachment to the bladder that holds the water leaks so the mist feels great but the cold water slowly leaks out the bottom and goes down your backside until it is depleted a short time later and then you have no mist and your clothes are wet.I bought two of these for use when my girlfriend and I are hiking, and they have been lifesavers! The mister works great, and the water stays cold for a long time. One of the units had a leak when it arrived, but it was only due to a hose not being seated properly. It was a 2 second fix. The owner gave me his phone number over email to help troubleshoot, and was more than helpful. He was friendly and informative about the product. I was on the fence about getting these for awhile, and I'm glad that I went for it.Easy to useI actually first got into this with my e-scooter and off-road trail riding. It worked out extremely well and has become the norm for me as part of my gear. I have since added an e-bike to my collection and obviously make use of it for that as well. Easy to maintain, I have been lucky with my mister. Mine stopped working fairly early, took a branch, well tree to the front and sporadically started working again.I have a love/hate thing going on with this backpack, and it's the exact same relationship I have with my rolling luggage: I love the product but hate the weight.This this is *exceptional*. I've never considered the need for a mister, but last week on a gentle hike at around 30C with my family it was a lifesaver. We had my nephew with us, and he was getting a little grumpy in the heat. The hike could have been spoiled, but the moment I turned on the mister the day was turned around. It works *incredibly* well, creating a bubble of cool air around you even on the hottest of days. We kept it running until we got back to the car, and as soon as he got home my nephew was asking him mum when he could next go on a hike with his uncle, auntie and the mister.So, the product itself is excellent. It's an absolute gamechanger if you struggle in the heat. My only issue is that the battery brings the weight of the pack above 2lb even before you add the water. On the upside you can remove the mister and battery on days when it's not hot enough to need it, turning the bag into a typical hydration pack, but if you find yourself out on a 50/50 day when you're not sure it'll be warm enough to need the mister you'll regret carrying the extra weight if the weather cools.All in all, though, I'm very happy with this bag. I'm sure I'll only take it out on really hot days, but on those days it will be a lifesaver.Easy to set up and use. Good material 10/10Amazing cooling backpack! Has reflective straps to make it easier to be seen at night plus an emergency whistle! Has pockets for plenty of storage, tho the main pockets mainly store the equipment. Has a 2L reservoir with an insulated cover. Has a wireless remote for easy use. Nozzle parts come apart easily for easy cleaning. Has 3 different speed levels. Great for any athlete! Stay cool and hydrated with this amazing durable backpack. Recommend buying!!