Black Flys is a California-born eyewear brand that has been making distinctive glasses since 1991. Its designs are aimed at people who want to stand out, with a strong urban style and roots in surf, skate, music and street culture. The official Spanish store offers a varied range of Black Flys sunglasses, including polarized options and models created through exclusive collaborations with artists, musicians and athletes. Featured partnerships include designs connected to surfers Christian Fletcher and Buttons Kaluhiokalani, skater Jay Adams, DJ Mix Master Mike, and groups such as Cypress Hill and Steel Pulse.

Beyond sunglasses, the collection includes protective eyewear for work, fishing, snow and screens, as well as high-resistance ballistic glasses for activities such as shooting and hunting. Customers can also shop for DJ-style glasses, caps, T-shirts, accessories, stickers and patches. The Spanish store describes itself as a small retailer whose team handles customer service directly, inviting shoppers to ask for advice about models or sizing. It offers delivery within 24–48 hours and allows 15 days for exchanges.