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4x4 Sidewinder Curve Ball Run Unit Block

$ 16.50

Everwood Friends item: 2265

Crazy Curves Ball Run Booster

See all Everwood Friends Ball Run Unit Blocks.

This is an individual solid maple ball run building block.

  • Unit geometry: 4 x 4 x 1
  • Dimensions: 5-1/2" x 5-1/2" x 1-3/8"

Everwood Friends™ patent-pending system of Ball Run Unit Blocks is an open-ended building toy meant for creative experimentation and exploration. Our unique unit-based, flat-bottomed ball channel design allows the blocks to be used seamlessly with other unit blocks and toys.

CHOKING HAZARD – Toy contains small balls. Not for children under 3 years.

Crayon shown in image is for scale only, and is not included.


  • 1 solid maple block

Craftsmanship & finishing

  • Everwood Friends™ blocks are precision crafted in Minnesota of domestic hard maple.
  • Hard maple is the perfect wood for toys given its high density, hardness, and tight grain that reduces splinters. You will love the weight of these blocks!
  • All surfaces are rounded for safety and sanded for a beautifully smooth feel.
  • Our blocks are not painted or stained for a natural beauty and durability.
  • Third-party lab tested for safety and certified CPSC compliant. Recommended ages 3+.


  • Everwood Friends™ ball run blocks come in many versatile shapes and sizes, and they integrate seamlessly with all our other building blocks for even more building potential. You will not find many of our shapes in other ball run or building block sets!
  • Every shape and edge is based on a precise 1-3/8" unit, the same as standard kindergarten blocks you remember. This means every block, in every orientation, will simply line up with all the other blocks no matter how tall or wide a structure is.

A Learning Experience

  • Ball run blocks are excellent for developing hand-eye coordination, balance, spatial reasoning, STEM, and fine motor skills.
  • Allow your child to play creatively, combining their blocks with other popular toys or their own imaginative games.
  • Create a car track. Use Ramps and Straights to build raceways for toy cars.
  • Design a bug maze. Build a flat maze that loops around and connects with itself, then set loose some mini robot bugs!
  • Build anything! Everwood Friends™ Ball Run Building Blocks are also true unit blocks! Use ball run blocks to add a pathway, moat, river, or bridge to any unit block creation!

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