Reviews Description: DW provides drummers with yet another sonic option, while at the same time utilizing renewable resources, that's ECO-X. They are big, full sounding drums with a huge fundamental, and all of the warmth, resonance, and attack that Collector's Series drums are known for. This DW Eco-X 5-piece drum shell pack not only satisfies drummer's needs with its huge sound, and full frequency range, but it also satisfies our need to be environmentally conscious. The unique hybrid bamboo/birch shells provide increased high-end attack, while DW's X Shell technology offers unprecedented low-end response. Plus, DW drummer-friendly features such as True Pitch Tuning, STM (Suspension Tom Mounts), Proportional Counter Hoops and DW Heads by Remo USA all come standard. It's a giant leap forward in shell technology and everyone wins! At DW, making drum shells sound better is what they do best. The X Shell technology all started with DW's foray into VLT, or Vertical Low Timbre Technology. They found that in experimenting with alternate ways to cross-laminate a shell, the tension on the shell could be greatly decreased if the majority of plies were run vertically, rather than horizontally. Just like a guitar string, the tighter it gets, the higher in pitch it goes. Drum shells must be cross-laminated for strength, so the idea of designing a completely vertical shell to achieve optimal low frequencies was never an option, until now—enter X Shells. The concept was derived from DW's popular line of VGE (Vertical Grain Exotics). DW had been laminating veneer in a diagonal orientation for a while, but had never considered the sonic benefits until Master Drum Designer John Good proposed it, "If we can mimic the effect of a complete VLT shell, we'll have created the lowest sounding drum ever." The first prototype was made and the result was a home run. Exactly what Mr. Good had anticipated, big, full sounding drums with a huge fundamental, and all of the warmth, resonance and attack that DW Collector's Series drums are known for. Cymbals and hardware not included.