[This review was collected as part of a promotion.] Pros: - What I like most is how easy the Battery compartment could be opened to Replace or Switch Batteries in case one doesn't work, other remaining batteries could be used - I like the See Through Mesh Front Pocket, it helps knowing what's inside at first glance - The lights are quite bright and noticeable from afar, especially at night - I like that the water tank is Insulated to keep water fresh - The Water Tank is made so that the water's weight is evenly spread - The water Tank has a Separate Insulated Backpack which can be removed and worn as another Backpack - The Suction Straw is designed so that it doesn't drip but over time, it might be due to wear and tears - The Suction Straw can be unscrewed, so any containers could be used as long as it fits with the Suction Straw Screw - The Backpack seems to be good quality overall and can hold most light necessities Cons: - As you can see in the pictures, there are many potential places the Suction Straw could be secured but there's no real good location (it's either cumbersome or it comes off) and I find it quite annoying - There's No Cover to protect the tip of the Suction Straw from hitting anything dirty. - Despite the Velcro covering the battery compartments (White Lights), I think if it could be opened from downside or on the side, it would better protect from the rain - I think it won't be easy finding a replacement for the Suction Straw Be sure to place the Front Battery compartments (Red Light) sideways otherwise it won't be secure, making it hard to Locate the Light Button.