3 layer of protection Made of kin-friendly non-woven fabric lightweight soft and comfortable. 3-layer outer color waterproof layer; middle filter layer; inner water aborption layer. Thisee maximum protection and full coverage throughout the day. HIDDEN TRIPE NOE Built-in noe trip upport help create fit and tructure around your noe a needed. Prevent glae from fogging. UNIEX FIT fit both men and women One size fit all Thisi a afe barrier option for men and women to tay fully covered without compromiing the comfort needed COMFORTABLE RING TRAP Extra soft elatic ear trap help eliminate preure behind the ear providing comfort during long period of use NOTE liTo better protect your health it isrecommended to change a new mak every 6-8 hour. Dipoable NOT reuable It isrecommended to top use if adjutment error or advere reaction occur during use Thisproduct isnot wahable make ure it isued within the validity period tore in a dry ventilated place away from flame and flammable /li