This is the Topeak MiniRocket iGlow Pump. A micro-sized mini pump with integrated Glow (iGlow) technology for added safety at night and during low visibility conditions. The transparent barrel contains an illuminated optical fiber element and transforms the pump body into an extra-bright red safety light to alert passing motorists of your presence or use as a warning baton. This bicycle pump features an aluminium thumb lock, securing it onto Presta valves. Comes complete with mounting bracket and batteries.