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LEGO Super Mario Reznor Knockdown Expansion Set 71390 Building Kit; Collectible Toy Playset for Kids; New 2021 (862 Pieces)

LEGO Super Mario Reznor Knockdown Expansion Set 71390 Building Kit; Collectible Toy Playset for Kids; New 2021 (862 Pieces)

Regular price $94.00 USD
Regular price Sale price $94.00 USD
Sale Sold out
Shipping calculated at checkout.

About This

  • Children will love the spinning, seesawing, Blue Toad-rescuing and speed challenges when they add this Reznor Knockdown Expansion Set (71390) to their LEGO Super Mario universe
  • Includes LEGO figures of iconic Super Mario characters – 2 Reznors, a seesawing Grrrol and a Blue Toad, plus a ? Block and Special Pipe: Speed Run offering players extra rewards
  • Features buildable rotating platforms that spin by turning LEGO Mario and/or LEGO Luigi (figures not included) on the connected stand, plus a Skewer to knock enemies off
  • This 862-piece toy building set makes an inspiring birthday or holiday gift for kids aged 8 and up who own a LEGO Super Mario Starter Course (71360 or 71387), which is required for play
  • Great for solo play or connect via Bluetooth to a friend’s LEGO Mario or LEGO Luigi figure (extra figures not included) for 2-player social play where teamwork earns bonus coins
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Whether you’re preparing for your baby’s arrival, searching for everyday must-haves, or finding the perfect gift, Tiny Joy is here to bring warmth, care, and happiness into your family’s life.

Baby Essentials

Tiny Care. Tiny Comfort. Tiny Joy.


Whether you’re preparing for your baby’s arrival, searching for everyday must-haves, or finding the perfect gift, Tiny Joy is here to bring warmth, care, and happiness into your family’s life.

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    I bought a STEM toy for my 6-year-old and she’s been playing with it non-stop. It’s fun and educational—win-win!
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  • ⭐️⭐️⭐️⭐️⭐️

    Great variety and safe materials! My twins love the puzzle sets—they’re colorful, sturdy, and keep them engaged.
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    The packaging was adorable and everything arrived in perfect condition. My son screamed with joy opening it!
    Grace T.

Frequently Asked Questions

How long does shipping take?

Shipping takes place within 3-5 business days. If there is a problem with the shipment of the product, we will notify you via the email address you entered when ordering.

Is free shipping available?

We do not currently offer free shipping. However, this may be added at some point. We apologize.

How can I get a tracking number for my order?

If your order has been shipped, we will add the tracking number to your order and notify you via the email address you entered when ordering.

How do I process a return or exchange?

For returns or exchanges, please contact us within 14 days of receiving the product, along with a receipt or screenshot of the purchase, and a photo of the product with the packaging or tag intact.