10-100 PROMask Features: Free Same-day Shipping (Continental US, HI, PR & GU only)* One-size fits all / adjustable nose-bridge (metal strip). Factory sealed in plastic & PROMask boxes (as shown in the listing images). 3-ply mask filters 99% of PFEs & BFEs. CE Certified Medical Grade Materials / ASTM Level 3. We sell to Government Agencies & Healthcare Institutions. *Orders ship same day if placed before 12 PM PST   For quick delivery to PR, HI & GU we highly recommend the optional expedited shipping options at checkout.