Windclear is purposely designed as a dedicated nose-filter. Protect your respiratory system without causing any discomfort. PVG-Graphene filter material that satisfies the strictest standard in medical application can be more effective to adsorb airborne particles and improve breathing experience. TPE makes Windclear lighter and softer and anti-allergy. Elastic Windclear can achieve full-contact to fit any shape of nasal cavity. Double helix structure increases contact area of adsorbed layer to inhaled air at the maximum so as to decrease particle content more effectively. What's more, transparent design keeps beauty!