Protective footwear, such as a motorcycle or motocross boot, having a molded top gasket andor a fold-over thermal barrier. The system may determine fuel injection characteristics and predict a gas burning rate or flame speed based on the fuel injection characteristics. Optionally, the fracturing fluid may further comprise an alcohol ethoxylate of the formula R3\u2014x\u2014OH, wherein R3 is a linear or branched alkyl group having from 6 to 18 carbon atoms, and wherein x ranges from 3 to 25. The compositions according to the invention exhibit good foaming and cleaning behavior, more particularly very good drainage behavior on plastic surfaces, and high material compatibility with the surfaces to be cleaned. The battery is supplying the circuit device with electrical power. Transitions in grayscale levels are restricted between adjacent pixels so as to reduce image degradation due to fringe field effects.