Portland Design Works Tiny Object CO2 Inflator with Leather C02 HolderPortland Design Works Tiny Object CO2 Inflator with Leather C02 Holder. The lightweight and compact Tiny Object CO2 Inflator efficiently fills flats. Use the control knob to dial in the perfect pressure while the included leather sleeve protects your hands from frosty CO2 cartridges. Full grain leather sleeve is vegetable tanned and conditioned with natural oils and waxes. Fits 16oz cartridges Control knob easily regulates CO2 flow Fits presta valves