Considering A Pump? Get The Right Type - A pump is a pump is a pump, right? Not exactly. For instance, a floor pump is the largest bike pump available. It's best for use in your garage because it fills bike tires quickly with its large air volume and accurate gauge. Yet, it's too big to lug around on your bike. A frame pump is smaller, and usually fits onto your bike by snapping in between two corners of your bike frame with a spring-loaded action. It is much lighter than a floor pump and its size still helps it pump to very high pressures quickly. The next size down is called a mini-pump. Smaller and lighter than a frame pump, the mini is a tradeoff between size and functionality. Mini pumps can achieve higher pressures but take longer to fill a tube. For those who demand the smallest tools possible, "micro" pumps are small enough to fit in medium-sized seat packs. Or, if inflation speed and compact size are essential, skip a pump altogether and use a CO2 inflator.