A comfortable mask with 3D cut, adjustable earloop, headband, and nose clip ;
Premium Quality: Uncompromised Comfort & Protection. The MFF mask is our bestselling mask.
The mask has passed the ASTM F3502-21 Standard Specification for Barrier Face Coverings. The filtration efficiency of the mask is over 86% even after 50 washes, based on 70+/-20nm particles.
Test Report please see blow:
ASTM F3502-21 part 1
ASTM F3502-21 part 2
Washing instruction: https://3smask.com/g_q/ In how to “How to take care of the 3S Mask” section.
XS, S, M
Son likes the fit of these masks and we are satisfied with their quality
Well made, secure and attractive
Love the masks. Bought for my son, they are comfortable, easy to adjust, the nose piece means it doesn’t slip, and i feel it’s very protective for school!