The ST buries other two-ply heads in its category. Packing two layers of 7.5mil film, we are talking serious protection! The ST promotes a full-bandwidth rimshot. It delivers all the volume and ring you could ask for, yet amazingly responds to the flick of a fingernail.
The same two plies, but with the higher harmonics brushed from the picture. Chost notes articulate beautifully, while the rimshot is lightly gated. Crack it fearlessly and the vents promote an organic sensation.
 "Evans Drum Heads - Evans Super Tough Drum Heads")