Hotpack Dust mask is for general purpose respiratory protection, use this everyday nuisance dust mask. It's perfect for keeping out non-toxic nuisance dusts during mowing, gardening, sweeping, and dusting. Each mask features an elastic strap and an adjustable aluminum nose piece for excellent comfort during wear. The strap helps keep the mask in place as you work so you can focus on the job at hand and not worry about losing your mask in the process.