The Chin Cover Seal is used to close off the bottom of the helmet to reduce excess airflow that may cause helmet lifting and to help prevent dust from entering at the bottom of the helmet. Made of fire-retardant material, the Chin Cover Seal installs at the bottom of the helmet by inserting the FR ABS between the shell edge and the face piece. They have also been found to be a great option as a breath deflector to prevent fogging. Available in 25mm, 40mm, 55mm, and 80mm sizes in our premium Grey fabric and 40mm, 55mm, and 80mm sizes in our standard Black fabric. Chin Cover Seals are not compatible with the GP2 Youth, K1 Sport, Sport, Sport EV, and open face helmet models.