• Useful tool for dusty activities such as housework, carpentry, welding, baking, and gardening. • Discrete fit inside the nose without elastic straps or fogging of glasses. • Soft frame with natural shape design that fits comfortably in the nostrils. • Hygienic system that separates filtered waste from the nasal cavity to avoid irritation. • Reusable frames and filters for greater cost-effectiveness. • The trial kit includes sizes S, M, L, and XL to find the right fit with 1 filter and 2 replacements per size.