Laken Classic Water Bottle Doesn'T Retain Or Impart Flavors,100% Leak Proof.This is the aluminum, single wall Laken Classic water bottle with a wide neck that sports external threads for added drinking comfort and better hygiene. The wide mouth facilitates introducing of ice cubes or frosty drinks and makes cleaning this bottle easy. The Classic exterior is powder coated over a brushed aluminum surface for an attractive look and comfortable grip.The Classic top is a screw on cap with a comfortable handle for ease of opening and closing.This great water bottle has an interior polyamide based lining.