Free shipping, instant purchase OK. Set of 4. 【Product Features】 ・3D立体構造 makes breathing easy, preventing the mask from sticking to the nose and mouth. ・Uses material that minimizes makeup smudges and linting. ・4-layer structure & 99% cut filter effectively blocks pollen and droplets. ・Worry-free design with no noticeable odor. 【Size & Specifications】 ・Size: 17cm x 7cm ・Materials: Polypropylene (lining & filter), Ear loops (polyester, polyurethane) ・Extra-thick 6mm ear loops that are gentle on the ears. ・High-performance filter: Cuts over 99% of particles of approximately 0.1㎛ (tested by Kaken Test Center) ・Nose fit for a secure, gap-free fit. ・Individually wrapped for convenient portability. 【Quality】 ・Complies with JIS standards (JIST9001 for general use) ・Member of the All Japan Mask Industry Association ・PFE/BFE/VFE 99.9% or higher (with test reports) 【How to Use】 1. Unfold the mask and confirm the top and bottom, then place it on your face. 2. Put the ear loops over your ears. 3. Adjust the nose fit to your nose. 4. Fit the mask securely to your chin and check for gaps. 【Cautions】 ・Cannot be used to prevent harmful dust or gases. ・Discontinue use if any skin irritation occurs. ・Packaging is done at a facility for people with disabilities. There may be slight variations in the outer packaging, but this does not affect product quality. ・Reliable quality ・Instant purchase welcome ・Carefully packaged and shipped