The Pyramex I-Force Slim® offers the same environmental protection and resilience as the I-Force® but is suitable for slimmer facial structures. These are about 6% smaller for a tight, secure fit. The frames of these goggles have a vented foam carriage that helps prevent dust from getting in. It comes with H2X anti-fog dual pane lenses for comfort and protection from dust particles. The outer lenses are made of superior scratch-resistant polycarbonate that can withstand a substantial amount of impact. The inner lenses are made of anti-fog acetate to prevent vision impairment. These also come with a quick-release strap that attaches to the temples for a secure fit.