Iceberg Design Whiskey Glass Bottom Raised Ice Mountain W...This crystal whiskey tumbler has a raised ice mountain sculpted into its base, so a pour of rye looks like it's floating over a glacier. It holds 200ml, the round shape sits steady in the hand, and there's room for a large cube or whiskey stones. It arrives in a wooden box with felt coasters, ready to give. A bit of theater for a neat pour or a slow one on the rocks. Hand wash to protect the sculpted base.