LIMIT - 2 at the sale price.
Real glassware - this double-walled cup has two glass layers with an internal vacuum to provide excellent insulation. While it has "two layers," it's actually a single piece of glass.
This is both a beautiful piece, and it's idea for insulating your hot drink (so it stays that way) from your cool fingers (so they stay that way). You'll wonder why they never thought of this before! (For glassware, that is.)