disposable face masks 50 pc | 3 layer filter>95% cup dust masks with metal nose bridge clip and elastic earloop | non-woven 3 layer single use mask, breathable & comfortable fit [bitomic] bitomic bitomic face mask disposable 50 pc/box | adult 3 layer + single use face masks with earloop, noseband | 3 ply filter breathable face mouth mask & dust & particles, latex free</br> some problem that you may care</br> 1.if strap break easily?</br> it may not break if you wear the face mask gently, and avoid pulling the strap too hard. </br> 2. if it wear comfortable?<br> the material is spun non-woven fabric, which is very soft, comfortable to wear</br> 3. if it stay pinched on nose?</br> please purchase bitomic product from the seller azooco.. . our nose bridges are all aluminium, and should hold its shape well if you wear correctly</br> our features:</br> disposable with 3 layer protection, 3 ply adjustable nose bridge clips and super elastic ear straps, against dust droplets, latex-free, waterproof, the middle 100% melt-blown polypropylene filtration layer provides an excellent guard against dust, can be used for the general public</br> specification:</br> materials: 3-layer</br> outer layer 100% spunbond polypropylene; </br> middle layer: 100% melt blown polypropylene; </br> inner layer: 100% spunbond polypropylene</br> quality:</br> our bitomic class 1 procedure face masks are made of 3-layer material, the middle 100% melt-blown polypropylene filtration layer provides an excellent guard against dust</br> product details: </br> color: blue </br> type: disposable </br> approved standards: gb/t32610-2016</br> expiration date: 2 years from date of manufacturing </br> manufactured not in the usa </br> package:</br> pack of 50 masks.</br> retail packaging - 50 pieces per box </br> tips: </br> storage conditions: keep in cool dry place. avoid heat over 40 c / 104 f, humidity < 80%</br> care instructions: these masks should be disposed of after each use</br> wear guide: keep the blue-side outside and the nose clip on the upper side</br>