One of the things that make the Herbalizer awesome is its versatility – you can use it either with a whip or a bag. The standard medium sized bags originally included with the Herbalizer work great, and you can always buy more of these Squeezevalve Balloons. These balloons are already attached to the silicone valves, which makes them easy to use and ready to go. The balloons are supplied in sets of four, and one set should last you a couple of months. To use a Squeezevalve Balloon, you simply unroll the bag and inflate it using the Herbalizer to fill it with vapor.