LET'S DRINK TO THIS. Okay, technically SNUG is made for kids who are old enough to drink through a straw but not old enough to stop spilling their drinks all over kingdom come. But the real beauty is that it's perfect for just about anyone (you included, Butterfingers). SNUG silicone straw lids fit over any regular cup with a 2.5"--3" diameter. Just pop in a straw and start sucking.