Sigg of Switzerland
"These Sigg bottles are made of a lightweight metal alloy that will far outlast plastics, and unlike most plastic bottles, lids won't leak. Hygienic interior coating won't leave a plastic taste and won't hold or transfer flavors even from acidic and alcoholic drinks. May be chilled, not frozen. Not for fuel storage. Easy twist-top with valve for drinking. Closeouts. Switzerland. Sorted by main body color-graphics may not be specified."