Andante Core-Tec Snare 14" head is laminated from Para-aramide and alternate layers of Polymeric High Density Thermoplastic. Rim - System - Precision lock bead non-slip rim system eliminates slippage of the head material. Totally Waterproof - Twin layer Thermoplastic through-bonded to prevent absorption of moisture from either face. Through-bonded expels all of the air from within the Para-aramide unifying the 3 layers to form 1. This creates a responsive and durable playing surface.