# Marble run Kosmos 44312903 building toy for ages 8 and up

**URL:** https://aio.lv/en/product--tmtoys-kos620974--10686081
**Data updated:** 2026-01-14 12:59 (EET)
**Category:** Construction Toys
**Manufacturer:** TMTOYS
**Manufacturer code:** KOS620974
**EAN:** 4002051617301
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Kosmos 44312903 is a marble run building toy designed for children aged 8 and above. It encourages creativity and problem-solving skills as kids build their own marble tracks. The set includes various components to create unique designs, enhancing fine motor skills and spatial awareness. Ideal for individual play or group activities, it provides hours of entertainment while promoting STEM learning.

## Long description

The Kosmos 44312903 marble run building toy by TMTOYS is designed for children aged 8 and up who enjoy hands-on construction and mechanical play. The set contains multiple track pieces, connectors and interactive elements that let users assemble custom marble courses. Building the run encourages logical planning, spatial reasoning and fine motor control while providing an open-ended activity suitable for solo or collaborative play.
Advantages
This marble run set offers modular components that can be combined in many configurations, allowing repeated redesign and experimentation. Clear mechanical interactions between parts and rolling marbles demonstrate basic physics principles such as gravity, momentum and collision in an intuitive way. Durable plastic pieces are shaped for straightforward joining and stable construction, helping maintain track integrity during play sessions.
Suitable for
Creative construction and free-play sessions
STEM-focused learning activities in classroom or home settings
Developing fine motor skills and hand–eye coordination
Group projects and cooperative problem-solving exercises
Demonstrating basic mechanics and motion concepts
Key specifications
Recommended age: 8 years and older
Material: durable molded plastic components
Set includes: assorted track pieces, connectors and rolling marbles (exact piece count may vary)
Compatibility: modular design for multiple assembly options
Weight and package dimensions: designed for tabletop assembly and storage
How to use
Unpack the components on a flat surface and sort pieces by type to simplify planning. Follow any included assembly guide for initial layouts, then experiment by rearranging track sections and connectors to create variations. Place a marble at the start of a constructed track and observe its motion, adjusting slopes and junctions to change speed and direction. For group play, assign construction and testing roles to encourage collaboration and iterative design.
Usage recommendations
Use the marble run on a stable, level surface to ensure reliable tracking. Supervise younger children during assembly and small-part handling. Store pieces in a resealable container to prevent loss and keep the set complete for future builds.

## Specifications

| Feature | Value |
|---|---|
| Product colour | Light blue, Light green, White |
| Country of origin | Germany |
| Package depth | 50 mm |
| Package height | 290 mm |
| Package width | 125 mm |
| Package type | Box |
| Product type | Marble run |
| Suggested gender | Boy/Girl |
| Recommended age (min) | 8 yr(s) |
| Sustainability compliance | Yes |
| Sustainability certificates | Forest Stewardship Council (FSC) Mix |
| Compliance certificates | CE |

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All TMTOYS products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized TMTOYS service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Marble run Kosmos 44312903?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/10686081/65685306_large.webp