The YOPP™ Sandbox Toy Set by Mango Materials is the planet-positive alternative to traditional plastic toys. Designed for little hands and big imaginations, this 3-piece beach toy set—including a bucket, scoop, and sifter—is made from YOPP™ (You Omit Polluting Plastics), a breakthrough material that safely returns to nature.
Inspired by biology and produced through sustainable U.S. biomanufacturing, YOPP™ is made from renewable carbon and non-toxic, petroleum-free ingredients. That means no BPAs, phthalates, or PVC—ever. Every piece is durable, lightweight, and crafted with eco-friendly colorants, ensuring a safe, guilt-free way to play.
Perfect for kids aged 2+, this compact 5.5-inch cube set fits easily in any beach bag. Whether you’re building sandcastles, exploring tide pools, or teaching your child about caring for the planet in your front yard, the YOPP™ Sandbox Toy Set turns playtime into a small act of climate action.
Pre-Order Today — limited to 1,000 units, shipping December 2025.
Key Features:
- 3-piece set: bucket, scoop, and sifter
- Made with YOPP™ biopolymer PHA material
- Non-toxic, renewable, and designed for the natural carbon cycle
- Made in the USA using methane-based biomanufacturing
- Safe for children, safe for the planet
Because caring for small hands means caring for their planet.
WHAT MAKES YOPP™ DIFFERENT
Not plastic. Something better.
Most toys are made from petroleum-based plastics that pollute our oceans for centuries.
If one of these toys were accidentally left behind, it’s designed to return to nature far faster than conventional plastic — because we believe their play shouldn’t cost the future
YOPP™ replaces them with PHA, a naturally occurring, non-toxic polymer made by microorganisms using renewable carbon. When its life is over, it safely returns to nature. No harm, no trace.
As Seen In
FAMILY PROMISE
You’re raising tomorrow’s explorers, builders, and caretakers. With YOPP™, you’re teaching them that play and planet care can go hand in hand.
Because caring for small hands means caring for their planet.
Mango Materials sees the future. Female innovators designing for the planet. AMAZING!
Absolutely love it! The quality is top-notch, and I’ve already recommended it to several friends.
I love having this set to share the challenge of plastics and the benefits of innovation with my kiddos.
Fast delivery, great quality, and amazing support! I had a few questions and the team was incredibly helpful and friendly throughout.
Discover the details
Inspired by biology and produced through sustainable U.S. biomanufacturing, YOPP™ is made from renewable carbon and non-toxic, petroleum-free ingredients. That means no BPAs, phthalates, or PVC—ever. Every piece is lightweight, and crafted with eco-friendly colorants, ensuring a safe, guilt-free way to play.
Designed for the natural carbon cycle
Uses colorants that pass ASTM D6400 standards (meaning specific biodegradation, heavy metal absence, disintegration, and ecotoxicity criteria were passed).
Safe Materials
Non-toxic. No petroleum. No BPAs. No phthalates. No PVC.
Agricultural Byproducts
The scoop is made from planet-positive YOPP+ from biogas emissions and contains agricultural resides (seen as speckles) from the Central Valley of California.
ABOUT MANGO MATERIALS
Mango Materials turns biogas methane—an emission from the Vacaville, CA wastewater plant—into a biopolymer called PHA. That’s the power of circular design: transforming waste into wonder.
YOPP™ stands for “You Omit Polluting Plastics.”
It’s more than a material—it’s a movement.
Have a question? We are here to help.
Check out the most common questions our customers asked. Still have questions? Contact our customer support.
When will my card be charged?
Your card will be charged a few days after ordering. At this time we are anticipating our first shipments to go out in early December.
When will I receive my order?
We’re excited to get your order to you! Orders typically ship within 3 business days after the release date. You’ll receive a tracking number as soon as your order is on its way so you can stay updated on its journey.
Can I cancel or change my preorder?
We understand that plans can change! If you need to cancel or make adjustments to your preorder, please reach out to our customer support email as soon as possible. We’ll do our best to accommodate your request before your order is processed for shipping.
What if the release date changes?
If there’s a change to the release date, we’ll notify you immediately with updated information. We strive to ensure that all timelines are met, but sometimes delays happen. We truly appreciate your patience!
Do you ship internationally?
At the moment, we’re only shipping within the United States, but we’re working on expanding our shipping options in the future. We’ll keep you updated if international shipping becomes available! Thanks for your understanding.
Will I get order updates?
Absolutely! Once your order has been processed and shipped, we’ll send you email updates with tracking details so you can follow your order every step of the way. We’re here to keep you informed!
Do you sell in wholesale/bulk rates?
Please contact us to discuss retailing our products in your store!