Umbra Birdie Foaming Soap Pump, Black Birdie foaming soap dispenser by umbra Combine any liquid soap with water to create creamy lather and conserve on soap usage Recommended mix of 90-percent water and 10-percent soap 11 Fluid-ounce (355 ML) capacity; measures 6-1/2 by 3-3/4 by 3-1/2-inch Design: alan wisniewski