Once you try on this apron, there's no going back to standard aprons. The SA 3 is made from heavy 10 oz. cotton canvas and has two rows of bar tack reinforced pockets for stashing pens, parts, tools, etc. The special crossback design removes pressure from the neck for all day comfort. A nylon quick release makes the apron easy to adjust and take off. A full 35 in length, the bottom 7 of the apron can be snapped up for a custom height fit. An embroidered Park Tool logo makes the apron as good looking even when it's dirty as it is functional.