Saddle up for an adventure with this exclusive POP! Keychain Cowboy BMO™! With a guitar in hand, this robotic rancher is ready to strum a tune in your Adventure Time™ collection. Expand your Cartoon Network™ programming by uploading POP! Keychain Cowboy BMO to your POP! Animation lineup. Vinyl keychain is approximately 4 in (10.2 cm) long.