4200N95 Series AirWave™ disposable valve-free respirator from Moldex features a patent-pending, wave design technology that allows more airflow in and out of the respirator for cool comfort and easier breathing. Unique waves double the filter surface area of a comparable respirator, and the Dura-Mesh® shell provides bi-directional protection from dirt on the outside and moisture on the inside. Moldex,www.moldex.com, (800) 421-0668. products