Engineered venting system in each frame promotes directional airflow across the inside surface of the lens, reducing the potential for moisture build up and maintaining your pristine vision. triple density the only material that touches your face is an ultra-soft layer of polar fleece which includes two layers foam to ensure a firm and comfortable fit. double density a medium density foam backs up a soft micro-fleece face layer. outrigger system designed for goggles to sit snugly on your face, while allowing the strap to interact independently with the latest helmet designs for an integrated fit.