This durable and lightweight (only 0.46 lbs.!) grinding shield is made from Dupont® super tough flame-retardant nylon and can withstand extreme heat and cold without cracking or deforming. The large shield design accommodates safety glasses under the shield and includes an adjustable durable Pera-Lok locking ratcheting head gear with replaceable sweatband. It also features a large viewing lens that maintains respiratory protection in different work environments. The Air Train directs air over the head and across the breathing zone to minimize fogging; while also allowing the user to have full control of the airflow direction! It has an APF level of 25 and complies with ANSI Z87.1+, CAN/CSA Z94.3. CE certified. NIOSH Approved.