The StringKing A Series defense lacrosse shaft porivdes superior performance at an amazing value. The 350 weight value is designed for younger players who are starting out in defense or as a LSM. This shaft is made out of preminum aluminum alloy and offers a solid strength-to-weight ratio without breaking the bank. Our Pro's love the weight of this shaft for advanced youth players, since it provides a light weight option from some of the heavier options out there in this price range. Pair this with a new StringKing Mark 2T lacrosse head and you will have one of the best advanced youth set ups in the game.