The XL Easy Valve Replacement Set for Storz & Bickel Volcano is a set to replace the mouthpieces and balloons originally included in the purchase of the Easy Valve Starter set. The balloons included are an upgrade measuring three feet long, which means they are ideal for sharing your vaporizer with a lot of your friends. To use these balloons, it is necessary to have the complete Easy Valve system. Each order of this set comes with six pieces of Easy Valve XL Balloon with Mouthpiece (length approx. 90 cm).