LEGO’s Plant-Based Plastics: Bio-PE, arMABS & 600 Material Tests

You’re snapping together LEGO bricks made from Brazilian sugarcane bio-PE, which delivers 89% renewable content and matches traditional plastic in clutch power, durability, and safety, just like the arMABS pieces using 20% recycled marble for clear elements, all tested across 600+ materials to guarantee quality, with 22% of LEGO’s 2024 plastic now renewable or recycled-proof that sustainability locks firmly into place. See how each innovation shapes the future of building.

We are supported by our audience. When you purchase through links on our site, we may earn an affiliate commission, at no extra cost for you. Learn more. Last update on 18th July 2026 / Images from Amazon Product Advertising API.

Notable Insights

• LEGO uses bio-PE from Brazilian sugarcane for flexible elements, maintaining durability and clutch power.
• Bio-PE, introduced in 2018, now appears in half of all LEGO sets with 89% renewable content.
• arMABS incorporates 20% recycled artificial marble, ensuring clarity and compatibility in transparent pieces.
• Over 600 materials were tested; only those passing safety, strength, and clutch power standards were adopted.
• Mass balance approach blends plant-based resins with conventional materials, achieving 22% sustainable content in 2024 without sacrificing performance.

How LEGO Is Making Bricks From Sugarcane

While you might not expect a toy brick to help tackle climate change, LEGO’s shift to plant-based plastics is a meaningful step forward. You’ve probably held a LEGO® brick made with bio-PE, a durable material sourced from sugarcane, which is 89% renewable. This plant-based plastic is used in over 200 flexible LEGO elements, especially botanical elements like leaves, trees, and accessories. Even though it’s made from sustainable materials, bio-PE performs just like traditional plastic-testers confirm it’s as strong, safe, and long-lasting. You’ll find these durable elements in about half of all LEGO sets today. Made from Brazilian sugarcane, bio-PE slashes fossil fuel use, though it’s currently limited to flexible LEGO elements due to technical gaps in rigidity. Still, it’s a practical step toward LEGO’s 2032 goal: all products in sustainable materials. For you, that means the same quality, just greener.

Turning Recycled Marble Into Transparent LEGO Pieces

A new material called arMABS, launched in 2024, is changing how LEGO makes transparent pieces, and you’ve likely already held one without even knowing it. Made with 20% recycled artificial marble from kitchen worktops offcuts, arMABS delivers durable, high-quality transparent elements that fit seamlessly with every brick you own. You get sustainable performance without compromise-safe, consistent, and built to last. Over 500 LEGO elements, like Lightsabers™ and windows, now use arMABS, with plans for over 85% of sets to include it. The recycled content excludes colorants, so clarity and color match stay perfect across builds.

arMABS supports LEGO’s 2032 renewable and recycled materials goal-proving sustainable can also be strong, clear, and totally compatible.

How Mass Balance Lets LEGO Use Renewable Plastic Today

You’ve already seen how LEGO’s arMABS plastic brings recycled content into transparent parts without sacrificing clarity or fit, and now there’s another big step happening behind the scenes-this one changes how LEGO sources the very foundation of most of its bricks. Using mass balance, LEGO mixes renewable resin made from plant oils with traditional materials through cutting-edge technology to mix feedstocks at scale. In 2023, 18% of their resin was certified renewable or recycled, averaging 12% renewable content across LEGO® bricks and elements. This approach doesn’t guarantee each brick contains bio-based material, but it helps reduce carbon emissions and supports infrastructure growth. Mass balance lets LEGO use renewable resources today while maintaining strict durability requirements and safety standards. They’re also working to mix renewable energy into production. It’s a practical step toward their 2032 goal of 100% certified renewable or recycled materials-proving progress doesn’t require perfection.

Why LEGO Tests 600+ Materials for Safety and Strength

Testing over 600 materials since 2016 shows how serious LEGO is about getting sustainability right without cutting corners on what matters most-safety, strength, and that signature clutch power. You want bricks that *last*, connect securely, and keep kids safe, so LEGO won’t settle for less. They test every material for durability, colorfastness, and compatibility-even if it’s made from renewable or recycled sources.

Here’s how some top contenders stack up:

They don’t just make greener bricks-they make better ones, without compromise.

Measuring LEGO’s Progress: 22% Sustainable Plastic and Rising

You’re already seeing the impact of LEGO’s material testing in your builds, with stronger, safer bricks made from better sources-and now, those efforts are adding up fast. As of 2024, 22% of the plastic in LEGO elements comes from renewable or recycled materials, a big jump from 12% in 2023. This growth relies on the mass balance approach, letting LEGO attribute plant oils to its resin supply even when blended with fossil-based plastics. You’ve likely handled bio-PE bricks since 2018-they’re in over 200 flexible botanical elements and appear in half your sets. Newer still is arMABS, made with 20% recycled artificial marble and used in 500+ transparent parts across 60% of sets. While minifigure torsos and limbs aren’t yet made with sustainable plastic, LEGO’s on track to reach 50% by 2026 and 100% by 2032.

Replay: Giving Old LEGO Bricks a New Life

While LEGO’s push for sustainable materials gets a lot of attention, its Replay program quietly delivers one of the most effective ways to cut waste: letting old bricks live on. You can send in used sets-cleaning and reuse mean fewer bricks end up in landfills. Replay reduces demand for virgin fossil fuels by keeping existing parts in play. Every donated box is a step towards circularity, helping LEGO make our products from renewable and recycled materials.

You’re part of the change-diverting plastic, extending play, and helping us make LEGO® bricks with less impact. We continue to join forces to reduce fossil use and build a future where every piece has purpose.

LEGO’s 2032 Goal: 100% Eco-Friendly Materials

If you’ve been keeping an eye on LEGO’s sustainability efforts, you’ll know they’re not just stacking bricks-they’re building a greener future, fast. The LEGO Group is working towards 100% eco-friendly materials by 2032, up from just 22% sustainable content in mid-2024. Right now, you’re already holding progress in your hands: bio-PE made from fossil-free Brazilian sugarcane molds 200+ flexible pieces, while arMABS, using recycled artificial marble, shapes over 900 transparent elements. They’ve tested 600+ new materials, ensuring each meets strict safety, durability, and clutch power standards. By absorbing up to 70% higher resin costs, they’re building a more sustainable kit without passing prices to you. Working towards more sustainable play, they’re swapping raw materials made from fossil sources with renewable, recycled, and plant-based alternatives. You’re not just buying toys-you’re supporting a sustainable future, one brick at a time.

On a final note

You’re holding stronger, greener LEGO bricks made from sugarcane-based polyethylene, tested across 600+ materials for 50+ years of durability, with 22% of plastic now sustainable, each piece flexing to 4,500 Newtons of force without cracking, and plant-based elements already in trees, bushes, and globes you build, so you get identical clutch power, same bright colors, and full recyclability-no trade-offs, just progress toward 100% eco-friendly materials by 2032.