Please refer to the images for details. This is a new, unopened item, but it has been stored at home, so please understand. *This is the last of the cool masks. Really cold! Feels refreshing and comfortable to wear! This is a set of 50 cold-feeling non-woven fabric masks. This product achieves a high record of Q-max 0.332, a contact cold sensation value that is rare even for cloth masks made with ordinary contact cold sensation materials, alleviating the discomfort and breathlessness experienced when wearing a mask in the summer. ● Achieves a cold sensation unlike anything before! As a contact cold sensation mask, it alleviates the discomfort and breathlessness experienced when wearing a mask in the summer, and at the same time, provides the peace of mind in terms of hygiene that cannot be obtained with reusable cloth masks! ● High-performance 99% cut filter ● VFE: Virus filtration efficiency 99% This indicates how much of particles of approximately 1.7μm in size can be cut. It shows the blocking effect of general viruses and droplets containing viruses. ● PFE: Fine particle filtration efficiency 99% ● BFE: Bacteria filtration efficiency 99% 【Features】 ・ Comfortable with contact cold sensation ・ Cold sensation value Q-Max 0.332 ・ Soft, gentle rubber that doesn't hurt your ears! Perfect fit ・ Three-layer structure cuts 99% of droplets and pollen ・ Good breathability ・ Achieves a smooth, comfortable feel