It's round and light blue. On the front there is a line form one end to the other; vertical. In the middle there are two short lines going accross; horizontal (not vertical; like the line that goes from one end to the other). Sort of looks like a t. The short lines (horizontal) going accross are not touching the vertical line. Each small horizontal line (one on each side of the long vertical line) have a tiny space on both sides of the long line (the line that goes from,one end to the other.
On the oppositeside there's an F and underneath the F the numbers " 20"