Tifosi intense single lens sunglassestifosi's intense single lens sunglasses are developed for durability and comfort. Though these are entry level sunglasses, they still offer top quality features you won't find in similarly priced sunglasses.virtually indestructiblethey have a virtually indestructible grilamid tr 90 frame, vented lenses that increase airflow and prevent fogging and an adjustable nose piece for a customised fit. 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 framehydrophilic ear and nose padsvented lensadjustable nose piecebag includedframe type open lensuv protectionweight 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.buy tifosi accessories from chain reaction cycles, the world's largest online bike store.