Innovative Seaweed Packaging — Scalable, Compostable, and Earth-Positive
Adopted by Leading Brands
Learn how seaweed-based materials can meet the demands of global supply chains while delivering on performance, efficiency, and circularity.
CASE STUDY: ALEX CRANE
CASE STUDY: OCEAN & SAN
CASE STUDY: ALES GREY
“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
"As people who prioritize the outdoors with a demographic that does the same, plastic packaging is antithetical to our brand. Seaweed bags are not only inherently cooler but truer to us."
- Alec Wilimovsky, Founder
“Sway packaging allows us to source and manufacture entirely within the US to reduce emissions, shorten supply chains, and support local jobs. At scale, this solution will allow brands to eliminate single-use plastics from their supply chains and embrace bio-based materials that better the planet. We are thrilled to grow with Sway for our packaging needs."
- Steve Patiño, CEO & Founder
“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
“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. Where most brands think of packaging as trash, we are reframing packaging as an innovation initiative.”
- 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
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 plastic polybags, it’s made from regenerative, renewable, and compostable ingredients, and designed to decompose after use.
With seaweed as a key ingredient, every Sway Polybag helps reduce our reliance on fossil fuels while supporting 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
Sway Polybags are 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: TPSea™ (pellets)
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 – are blended with other compostable ingredients to create a myriad of materials, including flexible films.
The Material: TPSea Flex™ (film)
Sway Polybags and Retail Bags are made from TPSea Flex™ film – the first of many materials created with Sway’s TPSea™ resin. This biobased flexible film is translucent, durable, and moisture-resistant.
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!
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 pakaging solutions that replenish seas, soils, and coastal communities.