We love these bags hubby and I got one for each. I loved them because they kept the sand off of our bags as well and it’s easy to clean. Everything was dry and we love how easy it is to take stuff in and out of the bag; very convenient.Used this for our trip to Hawaii. It was perfect- spacious, easy to carry and waterproof.Did a 4 day river float and camped every night. This bag kept all my stuff dry and secure and there were several times the rapids got us.The pack was great. I was in the ocean for hours at the public beach in Goa with all my gear in the backpack. I had my Blu-tooth speaker blasting music while we all enjoyed hanging out stress free without having to worry about keeping an eye on all my stuff if I had to leave it on the beach. No leaving anyone behind to watch-over our stuff.So aside from keeping all my stuff dry, it also acts like a flotation device (body weight is a factor - it may not work for you).In your future models, Please include:1: A cellphone pocket on the upper part of the shoulder strap. Doesn't have to be water proof, but it needs to be big enough to fit a smartphone with a waterproof case on it. This way its not submerged and I can be hands free.2: loops on the pack or straps for Carabiners to connect to it. This way I can strap my water bottle, or other items to it easily (or anchor it with something else so it can float and not get carried away by the waves).3: More pockets. Inside and outside. Just helps me to organize my stuff for easier access instead of digging thru everything to find something small in the bottom. (a divider inside could work almost as well - make the divider removable with velcro)4: A center-body strap. When I was in the ocean with the bag, every time a wave came by the pack would rise with the water while I stayed planted. A center-body strap would have prevented that from happening and kept the pack on me more securely.5: The main port of the bag, from my understanding is two pieces of plastic or paper or whatever. Why not make them magnetically seal together? or velcro, zipper, buttons, etc? I'm sure you had reasons behind it and I know it doesn't require it for the waterproofing. Just a suggestion.Thank you for a great product!Product was perfect for our water trip. Love that there were pockets for water and keys. Kept everything dry! Def recommend!i think this is a good bag but have not put it into used yet. i will use it for fishing in Alaska. that includes wearing it in deep streams while wading, and tossing it in a boat on saltwater. what i noticed with most of the "less expensive" drybags is that the bottom does not seem very durable to scrapes, tears, and wear. so i decided to cover mine with another layer as i know i will "toss" it around some. i used Gorilla patch tape. it is very thick, 4" wide and has a very strong adhesive. it is waterproof. from the pics you have seen what it did. it does not look pretty but the bottom of the bag will take some abuse before leaking for sure. i tested the bag for a few days, 1/2 of it being submerged as it may when i am standing in a river chest deep fishing. it did not leak at all. just wanted to share this. the tape would work with any dry bag for an extra layer of protection. you may be able to do a much prettier job of application than me. but i am happy with my bag, it will do the job and i am not that concerned about looks. i hope the strap attachments hold out!This bag is awesome. Great for beach or travel. Can hold my work laptop and travel monitor easily. Comfortable and I’m so glad I bought it!For starters, I think I looked at every waterproof bag on Amazon before selecting this one, and I am not disappointed. I love this bag for what it is, a great waterproof backpack. It's hard to find a waterproof bag in this size that is also a backpack...most of them just have one strap to wear across your body. It is very comfortable to wear and holds a lot. I like the water bottle pockets on both sides (thank you for providing two!). The front pocket is also nice for easy access to items that don't necessarily need to be protected (like a lip balm, pack of gum, etc). It is easy to roll and seal and it is indeed waterproof.As with all waterproof bags like these, everything does sink to the bottom and it can be hard to locate items. It's the nature of the beast. I recommend putting things in smaller bags just to help find what you're looking for. I have small makeup bags that I used. I know my keys and wallet were in one little bag, and other smaller items were in another.I do wish this came in other colors, but I do like this grey color as well. I want to get some for other family members and it would be handy if we all had a different color.All in all, this is very comfortable to wear as a backpack, it holds a lot, and it is waterproof. I will be buying more.