Review on Portland Design Works Tiny CO2 Inflator: Leather Sleeve for Optimal Performance by Terrence Castillo

Very nice design, first-class fit and workmanship, unfortunately the functionality is not as good as the larger PDW Shiny Object. I tried it at home and immediately noticed that it didn't fit snugly on the valve due to the valve's flat insertion through a silicone o-ring that lets air through and prevents the tire from being fully inflated. I was only able to get my 25c tire to 60psi versus 84-90psi with the Shiny Object. Also, the O-ring wears out after you inflate a tire, which isn't exactly confidence-inspiring. Unfortunately I think I'll return it and stick with my shiny item.