XL Polydron Set 1 is a 12-piece large-scale construction set by Polydron, made from 100% recycled plastic and suitable for children aged 2 and over, including those with general SEND and learning differences. Each square piece measures 40.5 x 40.5 cm -- four times the size of Giant Polydron -- giving children the experience of building truly large structures. The set contains 8 squares in two designs and 4 equilateral triangles, supplied in 4 colours, and is compatible with Giant Polydron.

Children use the pieces to build large outdoor and indoor constructions such as castles, towers, and tunnels. The pieces slot easily together to create sturdy structures, and the set is lightweight, safe, and easy to pack away. Polydron describe it as a great introduction to geometry for nurseries, kindergartens, and preschoolers, supporting learning in shape, space, 2D and 3D objects, texture, teamwork, and role play.

Please note: colours may vary due to the use of recycled materials.

For schools

XL Polydron Set 1 is a well-suited resource for EYFS and early KS1 settings, particularly for outdoor learning, SEND provision, and introductory maths. The large-scale pieces encourage whole-body engagement and collaborative construction, supporting children who benefit from active, kinaesthetic learning. The set introduces geometric concepts -- squares, triangles, 2D and 3D shapes -- in a hands-on, practical context that is accessible to children with a range of learning differences.

• Introduces geometry through play. Children learn about squares, equilateral triangles, 2D and 3D shapes, and spatial reasoning by handling and building with the pieces directly -- a kinaesthetic approach that supports children with SEND and learning differences.
• Supports teamwork and communication. Building large structures requires children to plan, collaborate, and communicate, developing social and language skills alongside mathematical thinking.
• Outdoor and indoor learning. The set is designed for use both indoors and outdoors, making it a flexible resource for outdoor EYFS provision and school grounds learning as well as indoor construction areas.
• Lightweight and easy to manage. At 4.2 kg for the full set, the pieces are lightweight enough for young children, including those with developing motor skills, to carry and handle independently.
• Expandable. XL Polydron Set 1 is compatible with Giant Polydron and can be extended with XL Polydron Set 2 and Set 3, supporting schools that want to grow their construction provision over time.

For parents and home use

XL Polydron Set 1 gives children aged 2 and over the chance to build large, impressive structures at home, using pieces that are four times the size of Giant Polydron. The large scale means children engage their whole body in the building process, which is particularly beneficial for children with SEND who thrive in active, physical play. The set is easy to pack away and suitable for use both in the garden and indoors.

• Big building for young children. The large-scale pieces let young children build castles, tunnels, and towers that they can actually stand inside or climb through, making construction play feel truly immersive.
• Teaches maths and shapes through play. Children naturally learn about squares, triangles, and how 2D shapes combine to make 3D structures -- early geometry concepts introduced without formal instruction.
• Encourages collaborative play. The size of the structures means children naturally involve siblings, parents, and friends, supporting social development and communication alongside construction skills.
• Sustainably made. 100% recycled plastic, BPA free, and fully recyclable, with a recyclable carton. Colours may vary due to the use of recycled materials.

SEND support

XL Polydron Set 1 supports children with a range of general SEND and learning differences through large-scale, whole-body construction play. The physical scale of the pieces -- each square measuring 40.5 x 40.5 cm -- encourages gross motor engagement and spatial awareness in a way that smaller construction sets cannot replicate. Building large structures with peers develops teamwork, turn-taking, and communication skills, which are valuable across a wide range of SEND needs. The set's simplicity -- 12 pieces, clear geometric shapes, straightforward slot-together mechanism -- means it is accessible to children with varying levels of ability and experience.

Whether you are equipping an outdoor EYFS learning area, a SEND provision space, or a garden play space at home, XL Polydron Set 1 is a robust, well-designed construction resource from a trusted educational brand. Contact The Dyslexia Shop for advice on how this product fits within your SEND provision or home learning plan.

• 12 pieces: 8 squares in two designs (4 x 16 Hole Squares and 4 x 4 Hole Squares) and 4 equilateral triangles, supplied in 4 colours.
• Large-scale pieces: Each square measures 40.5 x 40.5 cm (15.94 x 15.94 inches) -- four times the size of Giant Polydron.
• Build large structures: Suitable for building castles, towers, tunnels, and other large constructions indoors and outdoors.
• Teaches shape and space: Supports learning in shape, 2D and 3D objects, texture, teamwork, and role play through hands-on construction.
• Easy to connect: Pieces slot together easily to create sturdy structures.
• Lightweight and safe: Lightweight and safe to use for children aged 2 and over.
• Indoor and outdoor use: Suitable for use both indoors and outdoors. Easy to pack away.
• Compatible with Giant Polydron: XL Polydron is four times the size of Giant Polydron and fully compatible with the Giant Polydron range.
• Material: 100% recycled plastic, BPA free, and fully recyclable.
• Colour note: Supplied in 4 colours. Colours may vary due to the use of recycled materials.
• Weight: 4.2 kg.
• Dimensions (L x W x H): 41 x 28 x 41 cm.
• Age suitability: Suitable for children aged 2 and over.
• Cleaning: Hand wash with mild sterilising detergent.
• Packaging: Supplied in a recyclable carton.
• Brand: Polydron (XL Polydron range).
• Polydron Product Code: 70-7100.
• Barcode (EAN-13): 5060164531265.

• Truly large-scale construction. Each square measures 40.5 x 40.5 cm -- four times the size of Giant Polydron -- so children build structures big enough to stand inside, ideal for whole-body SEND play.
• Introduces geometry hands-on. Children handle squares and equilateral triangles to build 3D structures, learning shape and space through doing rather than watching.
• Supports teamwork and communication. Large-scale building naturally encourages collaboration and communication, developing social skills valued in SEND provision.
• Indoors and outdoors, easy to pack away. Lightweight at 4.2 kg for the full set, suitable for outdoor learning areas and garden play, and quick to store.
• 100% recycled plastic. BPA free, fully recyclable, and supplied in a recyclable carton -- a responsible choice for schools and families.

What's in the Box

• 4 x 16 Hole Squares
• 4 x 4 Hole Squares
• 4 x Equilateral Triangles

Total: 12 pieces, supplied in 4 colours. Colours may vary due to the use of recycled materials. A downloadable model guide (covering XL Polydron Sets 1, 2, and 3) is available free of charge from the Polydron website.

Compatibility

Compatible with Giant Polydron. XL Polydron pieces are four times the size of Giant Polydron pieces and connect directly with the Giant Polydron range. Also compatible with XL Polydron Set 2 and XL Polydron Set 3 for expanded construction.

Care and Cleaning

Hand wash with mild sterilising detergent. Do not machine wash.

Safety and Age Suitability

Lightweight and safe for children aged 2 and over.

Delivery and Returns

Standard UK delivery applies. See our Delivery and Returns page for full details.

• What is XL Polydron Set 1?
  XL Polydron Set 1 is a 12-piece large-scale construction set by Polydron, made from 100% recycled plastic for children aged 2 and over. The set contains 8 squares in two designs and 4 equilateral triangles, with each square measuring 40.5 x 40.5 cm -- four times the size of Giant Polydron. Children use the pieces to build large castles, towers, and tunnels both indoors and outdoors.
• What age is XL Polydron Set 1 suitable for?
  XL Polydron Set 1 is suitable for children aged 2 and over. The pieces are lightweight and safe, designed to be manageable for young children, including those with developing motor skills. Polydron describe it as an ideal introduction to geometry for nurseries, preschoolers, and early years settings.
• Is XL Polydron Set 1 suitable for children with SEND?
  Yes. The large-scale pieces encourage whole-body, kinaesthetic engagement with shape and space, which supports children with a range of general SEND and learning differences. The physical act of handling and connecting large geometric shapes builds spatial awareness and gross motor skills, while collaborative building develops teamwork and communication in a natural, play-based context.
• How big are the pieces in XL Polydron Set 1?
  Each square piece measures 40.5 x 40.5 cm (15.94 x 15.94 inches), making XL Polydron four times the size of Giant Polydron. This large scale allows children to build structures they can stand beside or inside, creating a truly immersive construction experience for young learners.
• Can XL Polydron Set 1 be used outdoors?
  Yes. XL Polydron Set 1 is designed for use both indoors and outdoors, and is easy to pack away after use. The large-scale pieces make it especially well-suited to outdoor learning areas, school grounds, and garden play spaces.
• Is XL Polydron Set 1 suitable for use in a school or EYFS setting?
  Yes. The set is well-suited to EYFS and early KS1 classrooms and outdoor learning areas. It introduces geometry through hands-on, collaborative play -- building squares and triangles into 3D structures -- and supports key EYFS learning goals around shape, space, measure, teamwork, and communication. It is particularly valuable in SEND provision for its kinaesthetic, large-scale approach.
• Can XL Polydron Set 1 be used at home to support a child with learning differences?
  Yes. The set is straightforward to set up and use at home, indoors or in the garden. The large scale and simple slot-together mechanism mean children with a range of general SEND and learning differences can engage independently or with an adult, building spatial awareness, gross motor skills, and early maths concepts through play.
• Is XL Polydron Set 1 compatible with other Polydron sets?
  Yes. XL Polydron Set 1 is compatible with Giant Polydron and can also be expanded with XL Polydron Set 2 and Set 3. XL Polydron pieces are four times the size of Giant Polydron pieces and connect directly with the Giant Polydron range.