The Crossbow Tri-Tech Fit™ Replacement Frame (Terrain Tan) is compatible with all ESS Crossbow® and Crosshair™ lenses and provides a universal fit with max comfort and zero pressure points. Recommended for use without ear cups (See Crossbow Suppressor™ for ear-cup-compatible frame). Includes a Terrain Tan, Tri-Tech Fit™ Crossbow™ frame and nosepiece.