Remo KS-0006-PH Falam 4' Diameter 1 Piece Double Pedal Patch
Remo's Double Falam Slam Patch keeps your bass drum head from busting open when you play lots of really loud notes on your pedal. It's made of Kevlar - you know, the bulletproof stuff.
To install, just remove the paper on the back to expose the adhesive and stick it right where your beater heads hit the drum.
This patch has ample space for two beater heads, for all you double bass players out there.