From the campaign:
CoolMiniOrNot and Micro Art Studios are excited to introduce the next generation of miniature bases!
Most decorative bases are designed as one piece, with terrain molded on top of a beveled game base. The CoolMiniOrNot system is actually two pieces. The first piece is a highly detailed terrain insert. The second piece is a black satin base, with a recessed center that holds the insert. This two part system creates a cohesive and beautiful base for your miniatures.