Standard .500 bore trombone, pitched in Bb & lightweight – less than 2 pounds! Easy to hold and play thanks to a custom designed ergonomic grip, with pBone's own unique water key design Glass-fibre lockable slide makes for a smooth rhythmical action - the glass fibre construction is also a lot more robust than a standard trombone slide so you're less likely to damage it! Includes matching pBone 6.5AL and 11C small shank mouthpieces and carry case (any standard small shank mouthpiece will fit the pBone) 6 month free membership with the International Trombone Association and free online lessons for all pBone owners!