The Hi-Energy Drumhead is a clear, single-ply head with an extremely thin layer of Power Dot material "bonded" to the entire surface of the head. It is reinforced in the center with a small Power Dot. Designed for heavy hitters who want a powerful sound and a lot of durability. The new "Safe-T-Loc" hoop along with Aquarian"s "Sound Curve" collar design provides easy tuning; great stick response; zero slippage inside the hoop; consistent sound; increased resonance and sensitivity; and the sound that drummers need and deserve.