Allston Summer Liner w/ Flip Visor
This replacement summer liner is made specifically for Allston and Morrison helmets. If you have one of these helmets that needs to be freshened up, this liner is perfect for you.
MIPS Brain Protection System
Rotational motion can cause brain injuries. The low friction layer allows a sliding movement of 10-15 mm in all directions, reducing rotational motion to the brain during impact.