helsinki - 15 white biodegradable face masks


high-performing. >99.95% biodegradable.

Meet Helsinki — a biodegradable everyday mask in soft white with a comfy fit and four high-performance layers to keep you (and the planet) healthy. Plus, a hidden nose bridge, soft ear loops, and minimal design makes it easy to wear and style.

four layers, 95% bacterial filtration, 95% particle filtration, breathable, skin friendly, biodegradable

what you get

  • 15 white biodegradable everyday masks (Helsinki)

why you’ll love it

  • >99.95% biodegradable (by weight)
  • ASTM Level 2, meets Type IIR standards
  • Superior filtration: >95% BFE and >95% PFE keeps out bacteria, allergens, and pollution
  • Proven protection: SGS and Nelson tested
  • Super comfy: ultra lightweight and highly breathable
  • Minimal, easy-to-wear style with an everyday fit

made with

  • Mask: 100% biodegradable PLA
  • 4-ply technology: 2x water-resistant outer layers, meltblown filter, moisture-absorbing inner layer
  • Earloops: 82% biodegradable PLA, 18% non-biodegradable spandex
  • Hypoallergenic and latex-free materials
  • Adjustable, hidden nose bridge for a secure fit
  • Soft, no-tug ear loops

doing good

  • Made responsibly in the USA at an FDA-registered factory
  • >99.95% biodegradable: made with renewable plant starches to decompose in months or years
  • 100% certified compostable components (excluding ear loops)
  • Packaging: 100% biodegradable and reusable pouch printed with soy ink
  • Support the cause you care about most — select a nonprofit at checkout and we’ll donate 1% of your purchase (at no cost to you!)

how to dispose

Toss the entire mask (including ear loops) into the trash to dispose — or remove the ear loops before composting. We’re working on a stretchy 100% biodegradable ear loop, but right now they require a small amount of spandex to ensure a snug fit.

global coordinates

The numbers on these masks are the global coordinates of Central Library Oodi in Helsinki — a reminder that we’re all connected no matter our gender, race, religion, or where we live.

Sitting directly opposite of the Finnish parliament building as a reminder of the government’s mandate for libraries to promote lifelong learning, active citizenship, democracy, and freedom of expression, Helsinki’s Central Library Oodi was built with local spruce planks, passive energy principles, and extreme energy-efficient performance that reaches near Zero Energy Building status.

other details

  • Industrial composting certifications for all components (excluding ear loops): EN-13432/OK Compost S478/Seedling 7W2030
  • 7in x 3.7in / 18cm x 9.5cm
  • Inside the layers: 2 white non-woven water-resistant outer layers, 1 white meltblown filter, 1 white non-woven moisture-absorbing inner layer
  • 95% PFE: 0.01 micron
  • Breathability: Differential Pressure (mm H20/cm2) < 5.0
  • Inflammability: <3.5 seconds
  • Due to the nature of this product, all sales are final and cannot be exchanged
  • These face masks are not substitutes for procedural masks in a clinical setting

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