Sway Polybag
Meet the Sway Polybag
✓ Translucent, durable & lightweight
Meet the Sway Polybag
✓ Translucent, durable & lightweight
✓ Pending home & industrial compost certification
Request a Free Sample
Stock Sway Polybags will be available for purchase soon!
Brands interested in using this innovative product in their packaging strategy can try free samples for team testing and review.
Sway Polybag samples are 5" x 7.25”. These small samples are a great way to experience the film’s strength, translucence, and functionality.
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The first scalable polybag made with a planet-replenishing resource: seaweed
Sway Polybags are strong, protective, and lightweight. While this bag matches the necessary performance of traditional LDPE polybags, it’s derived from a regenerative resource and designed to compost.
With seaweed as its hero ingredient, every Sway Polybag helps divert fossil fuels and instead supports healthy ecosystems and communities. Seaweed is an abundant, fast-growing crop that can improve ocean health, boost biodiversity, and support thriving coastal livelihoods.
Use Cases
The Sway Polybag is designed to protect dry goods from dust, scuffing, and weather during transit. It’s well-suited for products across:
✓ Fashion and apparel
✓ Sports and outdoors
✓ Personal care and cosmetics
✓ Home goods and accessories
✓ Tech and electronics
The Technology
Seaweed is abundant in natural polymers, which provide its stretchy, plastic-like quality. Sway utilizes these natural polymers from responsibly sourced seaweed to create a Certified 100% Biobased pellet technology. These pellets– called TPSea™, or Thermoplastic Seaweed Resin – are blended with other compostable polymers to create a myriad of materials, including flexible films.
Sway Polybags are the first TPSea™-based product innovation. These groundbreaking bags are composed of over 50% TPSea™ – setting the stage for a future in which flexible packaging is made from regenerative inputs.
Used By
We invite you to join the coalition of forward-thinking product brands investing in novel materials that can replenish the planet!
“With sustainable initiatives being an important part of the Florence brand, we are thrilled at the fact that companies like Sway are working on alternatives to single use plastic films. Their innovations in seaweed based films are on the forefront of sustainable solutions, and we see the technology as the future of packaging as a whole. Florence has gone to market with Sway's initial trials of their seaweed based materials with great success, and we couldn't be more excited to be a part of a larger movement in the world of regenerative materials.”
Bruce Moore, Director of Innovation
“Sway packaging is a gamechanger. Sway Polybags are meeting performance expectations, they enhance our customer’s experience, and have an amazing impact story. Sway’s holistic approach to sourcing seaweed – working with coastal communities and supporting regenerative ocean farming – mirrors Faherty’s own commitment to building meaningful industry relationships. This partnership goes beyond just packaging; it's about supporting an entire ecosystem of positive change."
Lisa Diegel, Director of Global Sustainability
“Packaging always presented a huge problem for us in our journey to rid plastic from our supply chain. It's always felt like our hands were tied and there were no real solutions / viable partners on the market. It wasn't until meeting and working with the Sway Team that we saw a light at the end of the tunnel and a real potential to change the packaging industry for good.”
Aaron Smith, Chief Operating Officer
“We deeply admire Sway for reimagining sustainable packaging with nature-driven, circular innovation. With a long-standing commitment to responsible materials and practices, we're excited to be piloting the Sway Polybag in our warehouse operations and are hopeful Sway will push the packaging industry forward with their bold solutions and vision for a more regenerative future.”
Ellen Johnson, Sustainability & Innovation Program Leader
Sway Polybag Secifications
○ Made with over 50% TPSea™
○ 2-4 mil thickness
○ Translucent, 7-8% opacity
○ Golden tint
○ Moisture resistant
○ Made in the USA with globally sourced seaweed inputs
○ Designed for home & industrial compost (TUV Austria certification pending)
Seaweed as a Packaging Input
Why It Matters
Responsibly grown seaweed is an emerging packaging input with big social and ecological benefits. Most biobased packaging inputs (including many conventionally grown land-based crops) degrade soils, threaten biodiversity, require high volumes of fresh water, cause pollution via nitrogen and phosphorus runoff, or rely heavily on fossil fuels for production.
Seaweed cultivation requires no land, fresh water, or fertilizers to grow, while actively improving ocean health, biodiversity, and coastal community livelihoods. Seaweed can create habitat, absorb excess nutrients, and balance ocean acidification. New science even suggests seaweed farming can sequester substantial amounts of carbon!
Seaweed holds incredible promise as a material feedstock, and Sway is paving the path towards making this material widely available long-term.
The Sway Polybag is an early step in achieving this vision! Read: Seaweed as a Packaging Input
EcoEnclose is thrilled to partner with Sway, a biomaterial innovation company dedicated to moving beyond sustainability towards regeneration.
Sway seeks to extend the ocean's inherent generosity by pairing seaweed's benevolent qualities with advanced materials science. They are designing next-generation replacements for plastic that replenish seas, soils, and coastal communities.
Frequently Asked Questions
Where does the seaweed come from?
Sway has trusted sourcing partners worldwide, including in Chile, Indonesia, Maine, France, Puerto Rico, and many more.
What kind of seaweed does Sway use?
Responsibly cultivated macroalgae and extracts. Sway prioritizes diversification in their sourcing to avoid over-reliance on any region or species, and support the positive impacts of expanded seaweed cultivation around the globe.
I love the material but don’t need poly bags. Can I use Sway’s film for other applications?
EcoEnclose’s current priority is to utilize Sway’s groundbreaking technology to replace LDPE film in poly bags and retail bags. If you are interested in applications outside of an LDPE bag replacement, contact the Sway team.
How do I track my order?
Your email receipt includes a tracking link from our shipping provider. If you are unable to locate your receipt, please contact our support team for assistance.
What is the shelf life?
Based on our experience to date, these bags have a shelf life of 18 months when stored in cool, dry conditions. With continued shelf-life testing, we will soon have more rigorous testing on this question.
Is it edible?
Nope! Don’t eat the bags.
Can it package food?
Not yet. The material ingredients are food contact safe, but the Sway Polybag itself is awaiting compliance confirmation to ensure food stays fresh inside.
Is it moisture-resistant?
Moisture-resistant—yes; waterproof—no. Sway Polybags can withstand some moisture (think humidity and exposure to rain in transit), but they are not waterproof or suited to package moist/perishable items.
Get a Sway Polybag Sample
Request a FREE sample and experience the strength, translucence, and versatility of Sway Polybags. Each sample is 5" x 7.25" — perfect for testing with your team.
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