URBAN ARMOR GEAR UAG 18L Lightweight Water-Resistant Laptop Backpack for 13-Inch Devices - Durable Padded Protection in Standard Issue Black - Perfect for Work, Travel & Outdoor Adventures

UPDATE 7/6/23: NOT WATERPROOF. We had a scattered thunderstorms and everything was WET. This bag would be food for a light rain...a drizzle. Water did seep through the zipper seams. I still wish I could access my water bottle and umbrella from the sides as opposed to the inside of the bag. This would be more convenient and ideal. The bag also doesn't stay sitting up own its own with a laptop and tech bag in the main space, which is a bummer.ORIGINAL REVIEW: I carried my 14" Lenovo laptop; tech bag with cables, adapters, external hard drive, thumb drives, and keys; pens; wallet; reading glasses and shades; and travel lotion. Oh, and a DearPark water and it was still lightweight compared to my ither backpacks. Also, my 38oz Yetti doesn't fit on the side but does in the main compartment which does weigh the bag down some.I carried the bag without my laptop and carried my iPad mini and keyboard with the above items and it was still lightweight but once my fibromyalgia inflamed the bag became heavy but not as heavy as my target backpack or other backpacks from Amazon.I didn't receive the extra velcro tag for the front of the backpack. Also, if you place items in the side compartments the water bottle will not fit properly. The front zipper pocket is so narrow it's hard to get my hand in to place/remove my business card holders. The top lined pocket I put my reading glasses, and phone, and mints for easy access.I do have problems re-zipping the main compartment with one hand because the zipper buckles like it doesn't want to catch so I have to place the bag down to zippen it completely.I will keep the bag because of the separate laptop compartment and the fact that it doesn't go all the way to the bottom of the bag AND because I used it for a week.I cannot comment on the waterproofing but I will update you once I have or if any issues arise.At the moment I do recommend the bag.