Stackable Wilder Speckle Canisters: Fenwick Stackable Wilder Speckle Canisters. Wash before first use with warm soapy water. Do not use abrasive cleaners or bleach. Tea, Coffee and Sugar Canisters: This set of round coffee, sugar and tea canisters are made from robust dolomite and topped with an airtight lid made from renewable bamboo.