The Nathan Elite 1 is a hydration belt. This Belt has one water battle pocket and a small, other pocket good for energy gels, keys, a cell phone, swiping chip… depending on your purpose. I found this belt to be quite comfortable especially  compared to other hydration belts. The water bottle pocket fits tight to the bottle its, keeping it from moving around, and the padding between the pocket and your back is well supported. This section is wide and thick with padding to make it comfortable and provides minimal to no movement on your back. These things all add up to give you a comfortable, light weight, small, convenient hydration belt. The  Nathan Booster Belt is a very small elastic belt for storing energy bars and gels. The belt is mall and almost unnoticeable. There are clips that easily clip on the the tab of energy gels and elastic rings that snugly fit energy bars. This is great for having your gels and bars very easily accessible. Also the belt fits nicely under any back packs and even a hydration belt. The down side that I experienced with this belt is that is that depending on the type of gel or bar, they tend to fall out over time and if you are trekking in/ through the bush and rub a tree to close or jump down a rock, this might be enough force for the bars and/ or gels to fall off. These things add up to give you a belt that could be very good for you or not so good depending on your activity of choice.