Its small size and light weight make it a practical pump and which can not do without when we tried it. Ultra easy to use, with super fast closing ... in short, I ordered it for me, but my 13 year old son who has passed: it always galérait with his bicycle pump, especially when the valve tends to "go" awry! Eh! Well, this time, no problem, its small size allows it to move easily between the spokes of the wheel. In addition, it is folded and closed in less than a second: result, it no longer reluctant to reinflate its wheels! In short, we love them both, and he is obliged to share it!