Free domestic* shipping $200+ | (844) RAD-1234

Foldable Climbing Triangle (Jumbo)

Ships in 2-3 Days



Our largest climbing product is the Jumbo Foldable Climbing Triangle. This form of triangle, which was inspired by child development pioneer Emmi Pikler, is one of our most versatile items.  Not only is it a lot of fun to use, but  it promotes gross motor development and confidence building. It encourages free movement and imagination.

One of the most popular items in our gross motor development collection, especially when used in conjunction with the RAD Climbing RampHengstenberg Ladder or DeskEasel, which may be ordered separately or as a bundle.

  • two kids climbing on best jumbo pikler triangle
  • family of three kids on top of american made montessori climber
  • a whole family enjoying two pikler triangles connected with ladders and ramps
  • two kids playing around on top of best pikler triangle made in USA
  • a jumbo pikler triangle in a montessori preschool
  • baby climbing extra large pikler triangle


  • Made from 13-ply Sustainable Formaldehyde-free Euro Birch which is both durable and attractive. 
  • Sealed with a Zero VOC UV cured finish. 
  • 28"(L) x 39.5"(W) x 41"(H) [when open]
  • 28"(L) x 6.5"(W) x 45.5"(H) [when folded]
  • Weight is 20 lbs
handmade best extra large pikler triangle


Suitably aged for children 2.5 to 5 years old
This product comes unassembled. Tools and detailed instructions are provided.
RAD design, sturdy construction, attention to detail and quality of material ensure safe use.
Automatic lock keeps the Triangle safely open
Our Triangles will easily support at least 100lbs per child.
Compatible with accessories; Reversible Climbing Ramp, Hengstenberg Ladder and DeskEasel
Designed for indoor and outdoor use, however, prolonged exposure to moisture and UV rays is not recommended.
Although our products are crafted to encourage exploration and free-form play, please never leave your child unattended to avoid injury.

  • Everything is handmade in our shop.
  • Shipping estimates are when an item will ship. In general, domestic shipments are in transit for 2 - 7 days.
  • Contiguous USA: Free Shipping on orders $200+
  • Los Angeles customers may choose to pickup from our shop. Select "Customer Pickup" during checkout to receive a discount on your order.
  • Hawaii, Alaska, and Canada: Shipping calculated at checkout

Customer Reviews

Based on 62 reviews
Hana S. (Lacey, US)
More than a climber!

I purchased this jumbo climbing triangle for my 3 year old’s birthday last June during the pandemic, and it has been so great. He plays every day just hanging out or leaning on it or sitting on top of it to play. I love how big and tall this is comparing to other products especially for my toddler who is very active. Also i got the ramp too and it was easy to clean. My boy drew all over with his markers and all wiped clean easily. Thank you for an amazing product.

Adriana P. (Mill Valley, US)
Absolutely the best!

We are all in love with these furnitures from the books, pikler triangle and tables and stools. We cannot have enough of it. Thank you.

Alison a. (San Diego, US)
Delightful! Great service, great quality, easy to fold

Well made construction, arrived quickly, made in USA by craftsmen? What more could you want! Our son loves playing on the slide, and can practice over and over in our living room, his gross motor skills are getting more and more refined (we purchased jumbo size). Much easier to fold up and store along the wall than I expected. Our living room is tiny and this was my biggest reservation. Assembly was straightforward and well explained. So happy I stopped dreaming and just bought it!

lindsay m.

We love it! We bought the jumbo for our 2 and 5 year old boys. They enjoy climbing on it, jumping off it and flipping under it and the fact they can make a fort too. The seller responded quickly to and questions or concerns I had! Put it together in about thirty minutes