Introducing the topeak ridecase waterproof with powerpack for iphone 5 with the same waterproof constructed case as its smaller sibling the ridecase but now updated with an integrated powerpack which will prolong the life of your phones battery the integrated 3150mah battery will give your phone an extra 1 and a half charges so if you get lost somewhere or cant find your way back then you have plenty of charge to call someone or use your phone to get you back home the weatherproof two to