The Nerf Pocket Vortex Howler is not available in the United States, but it's successor, the Rocket Whistler by HQ is! If you are familiar with the Nerf Pocket Vortex Howler, but can't find them in the stores anymore, you should be looking for the Rocket Whistler! It's the successor to the Nerf Vortex Howler and available to customers in the United States and Canada!