A slip-resistant eyewear system comprising: a nosepiece comprising a nosepiece material configured to couple to a bridge of an eyewear frame ; a tension adjuster configured to couple to a first hinge of the eyewear frame and a first bow , the tension adjuster comprising: a housing configured to house an internally threaded barrel that passes at least partially through a spring , the internally threaded barrel and the spring configured to seat at least partially within a first end of a first bow that passes at least partially into the housing; and an adjustment screw configured to threadably couple to the internally threaded barrel to adjust a tension of the first bow; and an eyewear retainer comprising: a first bow extension element configured to extend from a second end of the first bow, the first bow extension element comprising a protrusion extending outwardly from a first end of the first bow extension element; and a second bow extension element configured to extend from a second end of a second bow, the second bow extension element comprising an opening at a first end of the second bow extension element configured to secure the first and second bow extension elements together by receiving the protrusion of the first bow extension element when the first end of the second bow extension element overlaps the first end of the first bow extension element. a nosepiece comprising a nosepiece material configured to couple to a bridge of an eyewear frame ; a tension adjuster configured to couple to a first hinge of the eyewear frame and a first bow , the tension adjuster comprising: a housing configured to house an internally threaded barrel that passes at least partially through a spring , the internally threaded barrel and the spring configured to seat at least partially within a first end of a first bow that passes at least partially into the housing; and an adjustment screw configured to threadably couple to the internally threaded barrel to adjust a tension of the first bow; and a housing configured to house an internally threaded barrel that passes at least partially through a spring , the internally threaded barrel and the spring configured to seat at least partially within a first end of a first bow that passes at least partially into the housing; and an adjustment screw configured to threadably couple to the internally threaded barrel to adjust a tension of the first bow; and an eyewear retainer comprising: a first bow extension element configured to extend from a second end of the first bow, the first bow extension element comprising a protrusion extending outwardly from a first end of the first bow extension element; and a second bow extension element configured to extend from a second end of a second bow, the second bow extension element comprising an opening at a first end of the second bow extension element configured to secure the first and second bow extension elements together by receiving the protrusion of the first bow extension element when the first end of the second bow extension element overlaps the first end of the first bow extension element. a first bow extension element configured to extend from a second end of the first bow, the first bow extension element comprising a protrusion extending outwardly from a first end of the first bow extension element; and a second bow extension element configured to extend from a second end of a second bow, the second bow extension element comprising an opening at a first end of the second bow extension element configured to secure the first and second bow extension elements together by receiving the protrusion of the first bow extension element when the first end of the second bow extension element overlaps the first end of the first bow extension element. <EOS>