It is battery powered using 1xAA so with all this its perfect for traveling. Charger box is nice. I keep one at home and one at work. My only gripe is they do tend to wear down around the heel area quite fast if used for land trekking / walking but i suppose the clue is in the title Hydro, so i suppose water sport is there main forte. The extra room under the straps don?t bother me. As a plus, it is big enough that my iPhone 6 can rest on it as it charges! Okay so, lets talk. Easy access to keep all the leashes, collars, and warm coats in one place. Not sure if this could be because I have hardwood and not carpet or something. (The other pair is black, this pair is Brown.