Using these Tifosi Salto sunglasses is a breeze. Just put them on your face, and adjust the position with the Glide technology if needed to get the most comfortable fit. When you're out in the sun, they'll block 100% of UV rays and protect your eyes. As for care, clean the lenses with a soft, dry cloth regularly to keep them clear. Avoid dropping them or subjecting them to strong impacts, as the frames are tough but not indestructible. Also, store them in a case when not in use to prevent scratches.