And here you were, stylin' in your Juice Pack Air, thinking you were the king of the charging iPhone case hill with the sleekest hardware money can buy... but guess what? Life isn't fair, and MiLi intends to prove it by undercutting Mophie's solution by right around a twentieth of an inch of thickness. It's still packing 1200mAh of power -- the same that the Juice Pack Air offers -- which MiLi claims should be enough to just about double your run time. It's available now in a choice of eight scintillating color combos for £47.99 (about $74).