The PKR-I eyewear system is engineered for performance sports and tested to uphold the required endurance of an athletic pursuit. The Unisex PKR-I lightweight frame features an interchangeable lens system and is supplied with additional HiT-S16 lens to provide optimized vision and adaptability to differing weather conditions. Light transmission ranges from 13% with X-MLT Polarized lens to 87% while wearing HiT-S16. The HiT-S16 high transmission yellow-tint lens is composed by shatterproof Polycarbonate (PC) and functions to enhance contrast- and depth perception by improving sharpness and visual clarity in hazy or low-light conditions.