Our custom 3D contoured pattern was designed to provide space between you and the mask. This added space reduces condensation, making it more comfortable and effective for long periods of wear. This design also allows the mask to better fit the contours of your face. The 3D design provides a better seal when compared to flatter designs. We provide options for how to secure the face mask. We have the convenience of around the ear, the security of around the head, and the fit versatility of a tie version. For larger heads 2 and larger) and all-day work shifts, we recommend our Around the Head and Tie Back styles.