Yes, these are true bottom stamps.  Blank tops.  Make a great blank canvas to dye on.  Bottom Stamped  with the Phenix Bird Stamp.  See photo for stamp view.

The Destroyer is a fast, stable power driver with significant glide. Great disc for sidearm throwers and those with lots of power.  The Destroyer is a very fast stable long distance driver. This disc is much like a faster Wraith, but with a little more high and low speed stability. Great disc for sidearm throwers and those with lots of power. Can handle headwinds and throws with off axis torque. Not suggested for beginning players.  The Star Destroyer is endorsed by Avery Jenkins the 2009 PDGA World Champion.

Echo Star Line Plastic:
Each Echo Star disc contains 50% to 100% pre-consumer recycled plastic
Even better grip than our already grippy Star plastic
Limited resources means limited editions
Vertical graphics reduce stamping waste by 60%
Same price as Star!

Innova Flight Characteristics:
Speed:  12
Glide:  5
High Speed Turn:  -1
Low Speed Fade:  3