If you're here, you probably already know how important low tire pressure is for traction (and comfort). Like me, you may have done it the hard way by pressing on the valve stem and waiting. And I wait. With my 33" tires on a 16" wheel, it was 2 minutes of hissing before I even checked the pressure and then a few more momentary presses to get the desired deflation for each tire. It makes a big difference in time! The quality of the product is excellent and it is easy to use. The padded pocket is nice and holds ammo well, which I can also use to hold an inflator (you'll have to resort to road pressure at some point. Acceleration = Air). A must if you're walking off the sidewalk.