DUAL-LAYER LENS WITH ANTI-FOG COATING: Scratch-resistant spherical PC outer lens and anti-fog coated inner lens; anti-fog coating repels water molecules and eliminates any trace of condensation; protects against 100% of UV rays while maximizing the image contrast ERGONOMIC & PROTECTIVE FRAME: Constructed with a resilient TPU sponge, an impact-resistant PC lens and 3-layer foam, which protects your face while fitting perfectly DETACHABLE LENS & OTG DESIGN: The interchangeable lens can be replaced with another one of a different VLT to adapt to variable light conditions; the tall and wide frame enables you to wear your glasses underneath the goggles LARGE FOV & EXCELLENT BREATHABILITY: Feature a maximum field of view of more than 180°, increasing the awareness of your surroundings for safer downhill runs; 3-layer sponge with airflow holes increases air circulation, ensuring excellent heat dissipation ADJUSTABLE STRAP: 25.6-inch (65 cm) slip-resistant head strap is comfortable around your ears and head; suitable size for both adults and teenagers; great compatibility with most helmets.