Tifosi intense interchangeable lens sunglassestifosi's intense interchangeable lens sunglasses offer top quality features you'll struggle to find in similarly priced sunglasses. They include three interchangeable lenses to give you optical clarity, day or night and a microfibre cleaning pouch that has external slots for storing the 2 sets of unused lenses.virtually indestructiblethese exceptional sunglasses, developed for durability and comfort, have a virtually indestructible grilamid tr 90 frame and vented scratch resistant and shatterproof polycarbonate lenses that increase airflow and prevent fogging.customised fit, prevent slippagethey also feature adjustable nose and ear pads for a customised fit and the more you sweat, the more the hydrophilic rubber nose and ear pads grip to prevent slippage. These sunglasses also provide 100% uv protection against uvb and uva rays and come with a free bag.featuresgrilamid tr 90 framepolycarbonate lenseshydrophilic ear and nose pads3 interchangeable lensesvented lensadjustable nose pieceadjustable ear piecebag includedframe type open lensuv protectionmicrofibre cleaning pouch with external storage slotsweight 26gtechnologiesvented lenses the vented lenses increase airflow to prevent fogging and help keep you cool.uv protection all tifosi lenses provide 100% protection from harmful uva and uvb rays.adjustable nose piece allow for a custom fit, limiting slippage and increasing comfort.hydrophilic rubber rubber ear and nose pieces increase their grip the more you sweat.grilamid tr 90 frame an incredibly light and durable nylon material that resists chemical and uv damage.polycarbonate lenses constructed from scratch resistant, shatterproof polycarbonate.adjustable ear pieces allow for a custom fit, limiting slippage and increasing comfort.glare guard tifosi's proprietary glare guard lens coating reduces eye strain.interchange lens technology tifosi's interchange models come with three pairs of easy to change lenses per frame. There are two sets of lenses to choose from, each tailored toward a specific use. The bike run interchange is optimised for endurance activities, while the all sport interchange includes lenses specifically designed for ball sports like golf, tennis and baseball.buy tifosi accessories from chain reaction cycles, the world's largest online bike store.