Multi-flange adapter attaches directly to MSR® and Sweetwater® microfilter hoses to allow direct pumping into most any bottle or reservoir. Cleanside Cover protects the adapter from cross contamination. Adapter-only weight .97 oz / 27 g Cleanside-cover weight .69 oz / 19.5 g Diameter 2.7 in / 6.9 cm Length 1.9 in / 4.8 cm Material(s) PE Country of Origin Made in Seattle, USA