SKS stands for "same key system" so you can make it quick and easy unlock and get riding

This lightweight nylon five panel will keep you cool on the hottest missions

O-ring mounting for versatile mounting options

It will fit most mountain bikes and attaches with velcro straps for a secure fit

5 and 7mm keys aren't commonly found in the bicycle industry

TLD Flowline SE MIPS Helmet - M-L - Badge Olive - Indigo Needs Images SKS stands for "same keyDETAILS Be sure to stay safe on your bike rides with the Flowline SE Helmet from Troy Lee Designs. This half shell helmet seamlessly combines safety, comfort and style. Enjoy reliable impact absorption and a breathable airflow system with the helmet's design. Plus, the easy to use magnetic buckle ensures a secure closure every time. Conquer the mountain bike trails, or city streets, with the Troy Lee Designs Flowline SE Helmet. SPECIFICATIONS 3 Way