Model Number: FH-1658 Key Specifications/Special Features: Meet EN149:2001 standard3 thermo bonded poly mask with latex-free holding elasticsCool Flow valve reduced heat build up to offer comfortable protection, particularly in hot and humid conditionsReliable, effective protection against fine particulatesDurable collapse resistant inner shellExcellent fit over a wide range of face sizes provided by convex shape, nose clip and twin-strap designComfortable, lightweight off-the-face design