Magnetic Cube Building Blocks - Open-Ended STEM Toy, 150 or 300 Pieces

    Magnetic Cube Building Blocks - Open-Ended STEM Toy, 150 or 300 Pieces

      Product form

      $59.99

      • Shipping Free Shipping Within the U.S.
      • Refund 30-Day Money-Back Guarantee
      • Discount Buy 2 Save 10% • Buy 3 Save 15%
        Secure Checkout & Trusted Payments
        Free Tracked Shipping

        Free shipping on all orders! 

        We process orders within 1–2 business days. After dispatch your order will arrive in 6–8 business days!

        📦 Track Your Order anytime

        📧 Need help? Just Contact Us

        👉 View our full Shipping Policy

        Easy 30-Day Return

        If you are not completely satisfied with your order, just reach out to us within 30 days of delivery. We are always happy to help!

        📧 Need help? Just Contact Us

        👉 View our full Refund Policy

        Blocks That Actually Stay Where You Put Them

        A pile of blocks that won't hold its shape turns building time into frustration before the first tower even stands. These magnetic building cubes connect with a real snap and actually stay put, so a young builder can stack, knock down, and rebuild without a tower collapsing mid-idea. Each cube is sized for small hands, so control comes easily instead of fumbling with oversized pieces, and an included idea booklet gives a few starting shapes for kids who want a prompt rather than a blank pile. It's an open-ended toy that rewards patient, repeatable building rather than a one-and-done kit.

        Child building with small colourful magnetic cubes

        Real Magnets Beat Friction Every Time

        Ordinary building blocks rely on friction or interlocking teeth, which loosens over time and makes taller builds wobble or fall apart mid-play. These cubes use embedded magnets in each 0.8 in (2.03 cm) magnetized plastic cube, so connections stay firm through stacking, rebuilding, and everyday knockdowns without the pieces degrading the way friction-fit toys do. Available as a 150-piece or 300-piece set, the larger option gives room for bigger, more ambitious builds as a child's skills and patience grow, while the included idea pattern booklet suggests themes and starting shapes without limiting kids to only those ideas. It works equally well as quiet solo play or as a shared project with siblings and friends building side by side. Because the magnets are small, adult supervision matters — keep the set away from children under 3, and treat a swallowed magnet as a medical emergency.

        Magnetic building blocks cube set stacked into shapes and towers

        Key Features

        • Built-in magnets connect cubes firmly
        • Compact size fits small hands
        • Includes idea pattern booklet
        • Choose 150 or 300 piece set
        • Works for solo or group building

        Specifications

        • Product type: magnetic building blocks set
        • Cube size: 0.8 in (2.03 cm)
        • Material: magnetized plastic
        • Recommended age: 3 years and older
        • Set options: 150 pieces or 300 pieces

        Package Includes

        • Magnetic building cubes (selected set size)
        • 1 x Idea pattern booklet

        FAQs

        Q: What age are these blocks for?
        A: Ages 3 and up, with adult supervision; the small magnetic cubes must be kept away from children under 3.

        Q: How big is each cube?
        A: Each cube measures 0.8 in (2.03 cm), sized for small hands.

        Q: How many pieces are in the set?
        A: Choose 150 pieces or 300 pieces; both include the idea pattern booklet.

        Q: Can several children play at once?
        A: Yes, it suits solo play or shared building with friends and family.

        Delivery & Return

        When will my order be delivered?

        For orders within the United States, the total estimated delivery time is 7–10 business days. This includes an order handling time of 1–2 business days and a transit time of 6–8 business days. Please note that our daily order cutoff time is 5:00 PM (EST); orders placed after this time will be processed the next business day.

        View our full Shipping Policy.

        How can I track my order?

        Once your order has been processed and shipped (usually within 1–2 business days), you will receive a confirmation email containing your tracking number. If you have any questions about your delivery, our team is available Monday through Friday to assist you.

        Track your order anytime on our Order Tracking Page.

        Can I return my product?

        We offer a 30-day easy return window starting from the day you receive your order. To be eligible, items must be unused, in their original condition, and in their original packaging.

        View our full Return and Refund Policy.

        How do I start a return?

        Please email us at info@maniaver.com, or reach us from Contact Us page. Please include the following details in your message: your order number, the reason for the return, clear photos if the item is damaged or incorrect. Our support team will review your request and provide the return instructions.

        View our full Return and Refund Policy.

        Who pays for return shipping?

        If your product arrives damaged, defective, or is the incorrect item, we covers 100% of the return costs. If you are returning an item due to customer remorse (e.g., you changed your mind or ordered the wrong size/color), the customer is responsible for the return shipping costs. We recommend using a trackable shipping service for all returns.

        View our full Return and Refund Policy.

        Recently Viewed Products

          © 2026 Maniaver

            • American Express
            • Apple Pay
            • Google Pay
            • Mastercard
            • Shop Pay
            • Union Pay
            • Visa