From the manufacturer:

What if boutique-inspired drums loaded with pro-features were more affordable? What if drummers could get a wide variety of our most popular Custom Shop sizes and colors without breaking the bank? We’re proud to introduce a new concept, a completely re-imagined line of PDP drums designed for every drummer. It’s called the Concept Series and it has a fresh new look and a sound that already has drummers talking. Choose from Concept Maple or Concept Birch shells in a myriad of today’s most popular configurations. Then, add toms or bass drums to build custom-style kits to suit just about every musical style. Add to that, high-end features like STM (Suspension Tom Mounts), True Pitch tension rods, MAG throw-off, die cast low-mass claw hooks, proportionate counter hoops and durable lacquer finishes, and you have a kit that unquestionably lives up to its DW roots.