---
product_id: 539541217
title: "NATIONAL GEOGRAPHIC Kids 70-Piece Indoor Fort Builder - Blue Marble - Creative Play, STEM Building Toy for Kids 6-10"
brand: "blue marble"
price: "₨3300"
currency: SCR
in_stock: true
reviews_count: 5
category: "Blue Marble"
url: https://www.desertcart.sc/products/539541217-national-geographic-kids-70-piece-indoor-fort-builder-blue-marble
store_origin: SC
region: Seychelles
---

# Flex-Tech hubs for bendable, dynamic builds 70 modular pieces for endless creativity Dual-length sturdy poles for versatile structures NATIONAL GEOGRAPHIC Kids 70-Piece Indoor Fort Builder - Blue Marble - Creative Play, STEM Building Toy for Kids 6-10

**Brand:** blue marble
**Price:** ₨3300
**Availability:** ✅ In Stock

## Summary

> 🏰 Build your child’s imagination fortress—where STEM meets epic play!

## Quick Answers

- **What is this?** NATIONAL GEOGRAPHIC Kids 70-Piece Indoor Fort Builder - Blue Marble - Creative Play, STEM Building Toy for Kids 6-10 by blue marble
- **How much does it cost?** ₨3300 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/539541217-national-geographic-kids-70-piece-indoor-fort-builder-blue-marble)

## Best For

- blue marble enthusiasts

## Why This Product

- Trusted blue marble brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Premium Durability:** High-quality poles and clips guarantee stable, long-lasting forts that grow with your child.
- • **Blanket-Ready Design:** Clips included to easily transform forts into cozy hideouts using household sheets.
- • **Flex-Tech Innovation:** Bendable hubs ensure easy assembly and allow for unique shapes like domes and castles.
- • **Epic Fort-Building Power:** 70-piece kit fuels limitless indoor fort designs that spark creativity and STEM skills.
- • **Step-by-Step STEM Learning:** Includes guided builds to boost confidence and spatial reasoning before freeform play.

## Overview

The NATIONAL GEOGRAPHIC Kids 70-Piece Indoor Fort Builder is a premium STEM toy designed for kids aged 6-10. Featuring 70 modular pieces including flexible Flex-Tech hubs and dual-length poles, it enables endless fort configurations from castles to geodesic domes. Durable and easy to assemble, it encourages spatial awareness and engineering skills with guided instructions, while clips allow for quick blanket covers to create cozy indoor play spaces.

## Description

Our patented, modular fort-building system has five unique kinds of lightweight, stable pole connectors allowing for a broader variety of fort shapes, like geodesic domes, in addition to box-shaped forts. The set comes with long and short poles and patent-pending connectors. Use blankets or sheets from home to cover.

Review: I purchased 2 boxes and still not enough pieces for my 8yo grandson to build a decent fort.
Review: My kids are very into building “houses”. We bought two sets of these and they have really enjoyed them. The designs are well thought of, with various types of connectors to make sturdy structures as far as imagination leads. Quality is top notch as National Geography products always have been.

## Features

- BUILD THE COOLEST FORTS EVER - With 70 pieces, kids can build forts that are nothing less than epic! This fort building kit makes it easy to build an indoor fort with endless configurations. It's perfect for creative building and play!
- BENDABLE PIECES MAKE BUILDING EASY - The Flex-Tech hubs in this fort kit hold the poles tight and flex, allowing kids to build tents, castles, even dome-shaped forts! Kids can let their imaginations run wild as they construct the perfect play fort.
- DURABLE, PREMIUM-QUALITY COMPONENTS - Sturdy poles in two different lengths work with the Flex-Tech hubs to create a number of dynamic structures, with 4 included clips that make it easy to cover the fort with a sheet or blanket (not included).
- GROWS WITH YOUR KIDS – Kids will learn the basics of connecting pieces from the included Building Guide, including step-by-step instructions for building a pyramid and an airplane, so they can build with confidence before trying their own designs!
- HIGH-QUALITY EDUCATIONAL TOYS - We're proud to make the highest quality hands-on science toys, and all our products are backed by exceptional service. If your experience is less than stellar, let us know and we'll make things right!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BQX2TSWH |
| Assembly Required | Yes |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #50,441 in Toys ( See Top 100 in Toys ) #2,451 in Toy Building Sets |
| Customer Reviews | 4.0 4.0 out of 5 stars (363) |
| Date First Available | 14 February 2023 |
| Educational Objective(s) | Engineering, Spacial Awareness, STEM |
| Item model number | RTFORT70 |
| Manufacturer recommended age | 4 - 18 years |
| Material Type(s) | Plastic |
| Product Dimensions | 37.49 x 11.4 x 30.51 cm; 1.92 kg |
| Release date | 6 December 2024 |
| Remote Control Included? | No |
| Remote Control Type | None - Not Applicable |

## Product Details

- **Brand:** Blue Marble
- **Material:** Plastic
- **Product dimensions:** 37.5D x 11W x 30.5H centimeters
- **Size:** One Size
- **Style:** 70 Piece

## Images

![NATIONAL GEOGRAPHIC Kids 70-Piece Indoor Fort Builder - Blue Marble - Creative Play, STEM Building Toy for Kids 6-10 - Image 1](https://m.media-amazon.com/images/I/917gwhTmVXL.jpg)

## Customer Reviews

### ⭐⭐⭐ Review
*by C***N on 5 January 2024*

I purchased 2 boxes and still not enough pieces for my 8yo grandson to build a decent fort.

### ⭐⭐⭐⭐⭐ Review
*by Y***G on 14 October 2023*

My kids are very into building “houses”. We bought two sets of these and they have really enjoyed them. The designs are well thought of, with various types of connectors to make sturdy structures as far as imagination leads. Quality is top notch as National Geography products always have been.

### ⭐⭐⭐⭐⭐ Review
*by G***R on 26 May 2024*

Build a rocket, build a Castle just enough pieces for a small cubby. Enjoy with the family

## Frequently Bought Together

- National Geographic Kids Fort Building Kit - 70-Piece Indoor Fort Builder for Kids - Build a Fort for Creative Play, STEM Building Toy, Fort Building Kit for Kids 6-10, Blanket Fort Kit for Kids
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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-25*