1. The "pattern style" and "pure color style" mask is made by diving material for it's durable and strong advantage.So it might smell a little bit,it's very normal,it will fade by itself,you also could put mask in 30℃ water for 15mins to remove it quickly:)

2. Our mask maybe a little small for European people who has big head,please measure your head perimeter before you buy it

3. Only the "pure color style" is aluminium nose clip,and it's covered with a protective film,other style is high quality plastic nose clip

4. Every mask is equip with one filter,if you want more,you could buy more filters together