Key Details:Design: Features a "U-Shape" arch design with vertical ribbed textures.Common Uses: Used for cocktails (like an Old Fashioned or Lowball), whiskey, juice, water, or even iced coffee.Variants: They typically come in two main sizes:Lowball/Double Old Fashioned (DOF): Approx. 11–12 oz (320–350 ml) for short : Approx. 15–17 oz (380–520 ml) for taller drinks.Material: Generally made from heavy, lead-free glass or crystal, and many versions are dishwasher-safe.