They fit 8x10 frames-- not poster size like I thought.  But really nice nevertheless.
These were awesome-- smaller than I anticipated, though.  They fit an 8x10 frame perfectly.  I framed them with white wood frames, and they were a perfect present for a high school graduate who is in to computers.  They came super fast, and are on very sturdy paper.  Very pleased.  I am considering ordering some of his other sketches.
Rating: 5 stars