3 Play mask with nose piece (full length) 99% filtration efficacy to 3 micron particle size. latex free made of brand new hypoallergenic material, odourless and lint free. Disposable 3-Ply Non-Woven Face Mask with Ear Loop. Size 18cm x 9.5cm Available in Blue / Green / White colors. Outer Layer Spund-bound PP Nonwoven 25 gsm Filter Medium Meltblown PP Nonwoven: 20 gsm Inner Layer Lint free ES Nonwoven 25 gsm