The Levenis 50-pack offers a standard five-layer KN95 design in a deep black color. These masks are a practical choice for high-turnover environments where you need to provide protection for many people at a low per-unit cost. The fold-flat design includes a middle layer of hot air cotton, which provides some structural support to help the mask maintain its "cup" shape when worn.
Build quality specifications show an internal aluminum nose bridge and polyester-spandex ear loops. In reality, the ultrasonic welds for the straps can be brittle, so it is a good idea to carry a spare in case one snaps while you are out. The nose wire is a thin gauge, which is easy to bend but may spring back, potentially leading to gaps near the bridge of the nose for eyeglass wearers.
Tests indicate that the masks have a very neutral VOC profile, meaning they don't have the strong chemical smell often associated with black dyes. The material is designed to be skin-friendly, though the sizing is optimized for small-to-medium faces. If you have a larger facial structure, the ear loops may feel tight during extended wear.
If you find the ear loops on this model too tight, you might prefer the Sengtor 50-pack, which features extra-wide elastic for a different fit.
Organizing a large supply of masks is easy with the right bins; you can see our full range of options in the KN95 dust masks for art and lab classes category.