The ESS CrossbowTM is unlike any other ballistic eyeshield. ClearZoneTM FlowCoat dual lens coatings eliminate fog inside and prevent scratches outside. The DedBoltTM Lens Lock System keeps lenses easy to swap yet secure under impact. Tri-Tech Fit Technology achieves an amazing universal fit with max comfort and zero pressure points. The 2.4mm polycarbonate high-impact lenses feature ESSOPTICSTM for distortion-free optical precision. Form, Fit, Function…Perfected.