Motion Note: Extra lining for Triple 8 Brainsaver longboard skateboard helmets to either resize or replace old lining. Triple 8's patented Sweatsaver™ liners are found in their Brainsaver helmets. Although these helmet pads are washable, if your old Sweatsaver™ liner is beyond disgusting, we suggest replacing it with a brand new Sweatsaver™ liner! Also, if your brain grows and you can no longer fit into your old Triple 8 Brainsaver helmet, just get one of these in the next size up and swap it out with your old liner. Ta da!