Review on WACOOL 3L 3 Liter 100oz BPA-Free EVA Hydration Pack Bladder with Leak-Proof Water Reservoir by Mark Deuschle

I just received this product and decided to test it and see how it works. Filled up to 3 liters and started standing upside down or with lid down. Once the lid is under water pressure, it will begin to flow out of the lid. I tried to make the hat as tight as possible and nothing! flows every time. Also, the seal in the top bladder opening is quite flimsy, and at one point I was able to fully open the seal with very little effort. I don't think the seal will hold much weight before it comes loose. Do not buy this product! This company should test their products before they sell them! A big problem I noticed with this list is product reviews. I bought it blindly because I was in a hurry to buy it for my upcoming trip and also because the overall rating is 4 stars. So I didn't bother to read the bad reviews and do my research (like I usually do). Wow! What mistake! A lot of the 4 star reviews are essentially misleading and totally useless (I'm trying to be polite here). If you actually take the time to read them, you'll see that many of these 4-star reviews were mostly written by customers who had the exact same issues (leaks and such), but the company offered a "good" customer service, so they decided to change their original rating from 1.-2 stars to 4 stars.wow.4?! I understand that good customer service is important and I thank them for that, but changing your score to 4 because of customer service and not product quality is misleading to say the least. Reviews should be about the product and not the company's customer service, this product would get a maximum of 2 stars and probably less. Do yourself a favor and stay away from this product!