Indoor Pikler Triangles, Arches & Rockers

Wooden Pikler triangles, climbing arches and rockers for the first climbing years. Most fold flat, all are solid wood with non toxic finishes, and the pieces work together in different configurations as a child grows.

Hazel is our best selling foldable set, with a reversible ramp and a rocker. Olive is the colorful version in three sizes. Maple is the small set for babies and early walkers, and Balis is a climbing arch and rocker to pair with any triangle.

New to these? Our Pikler triangle buying guide covers ages, sizes and rung spacing in detail.
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Wooden Pikler Triangles for Babies and Toddlers

A Pikler triangle is usually a child's first climber. Graded rungs let them climb one step higher each week without being lifted into place, which is the whole point: the child sets the height, not the adult. Developed by Dr. Emmi Pikler, the design has barely changed in seventy years because it does not need to.

Our range runs from the Maple, a beginner set with a triangle just over 17 inches tall for ages 1 to 5, to the Hazel, our most popular foldable 5-in-1 set for ages 1 to 6, tested to ASTM and CPSIA standards and holding up to 220 pounds per child, and the Bazel, with a 29.5 inch triangle and a large rocker arch for confident climbers.

The short answer: start around age 1, when your child pulls up to stand. Choose a low triangle like the Maple for first climbs, a complete foldable set like the Hazel to cover ages 1 to 6, or a taller set like the Bazel for toddlers who want more challenge.

Triangles, Ramps and Full Sets

A triangle on its own is the classic A-frame to climb up and over. A Pikler triangle set adds a reversible ramp, and often an arch or rocker, so the pieces combine in different ways.

The ramp does three jobs. Flat side up it is a slide; flipped over it is a climbing ramp with grips; leaned at a low angle it becomes a crawling incline for a baby who is not yet climbing. That is why a Pikler triangle with a slide extends the useful age range at both ends.

Climbing Arches and Rockers

A Pikler arch is the curved companion piece. Right way up it is a rocker a baby can sit in; turned over it is an arch to climb over, crawl through or drape a blanket across for a den. Because it sits low, it usually gets used earlier than the triangle itself, and paired together the two double the number of ways a child uses the same corner of the room.

What Age to Start

Our Pikler sets are designed for children from 1 year old, the age when most are pulling up to stand and taking first steps. At first, pulling up and placing a foot on the first rung is the exercise. Through the toddler years children climb to the top and back down, and by the preschool years they combine the pieces into obstacle courses. Sets like the Hazel keep working through age 6.

Height suits stage: just over 17 inches, like the Maple, for first climbs; about 27 inches, like the Hazel, for the widest span of use; and 29.5 inches, like the Bazel, for confident climbers. For a full comparison, see our Pikler triangle buying guide.

Space, Storage and Setup

  • Footprint: Check each set's dimensions, and allow about two feet of clearance on each open side, plus room at the bottom of the slide.

  • Folding: Foldable triangles collapse flat and store behind a door or under a bed between uses.

  • Flooring: A padded mat or thick rug on hard floors, which protects the floor as much as the child.

  • Indoors: These use indoor finishes. An afternoon in the garden is fine; leaving one outside permanently is not.

  • Accessories: A cotton tent cover, rocker cushions and a desk and chair attachment change how a triangle is used without replacing it.

Pikler Triangle FAQs

What age is a Pikler triangle for?

Our Pikler sets are designed from 1 year old, when most children pull up to stand. The Maple suits ages 1 to 5, and the Hazel ages 1 to 6.

What size should I buy?

Just over 17 inches for first climbers, about 27 inches to cover the toddler and preschool years, and 29.5 inches for confident climbers. Check the folded size too if it needs storing.

What is the difference between a triangle and an arch?

The triangle is for climbing up and over. The arch is a low curved piece that rocks one way up and works as a climbing arch or tunnel the other. Many families own both.

Do Pikler triangles fold?

The Hazel and Bazel do, folding flat with a locking mechanism. Folding makes them practical in a shared room, where a fixed frame would not last long.

Is a Pikler triangle Montessori?

Not strictly, but it aligns closely with Montessori principles: independent movement, freedom of exploration and confidence built through self-directed play.

Do you need a mat underneath?

On hard floors, yes. A padded mat makes a nervous first climber braver and protects the floor from dents.