Safe and Secure Building Blocks Made of Domestic Cedar for Ages 0 and Up | Anti-Swallowing Design and Carefully Beveled Edges for Safety | Tsumiki-zu Building Blocks (10 Rectangular Prisms)

These are building blocks made from domestically sourced Japanese cedar, designed for babies who tend to put everything in their mouths. We've meticulously considered the size, material, and finish to make them safe for infants from 0 years old.

You can confidently choose them as a "first toy" or a "baby shower gift."

● Do you have these concerns? ●

—Is it safe if my baby puts it in their mouth?

—Is it too small and dangerous?

—Does it really promote intellectual development?

Tsumikies building blocks address these concerns through their material, design, and concept.

● 3 Reasons Tsumikies Building Blocks are Chosen ●

Reason 1: Size designed to prevent accidental ingestion

Babies explore toys by licking them. Tsumikies building blocks are designed with a size that considers the risk of accidental ingestion.

・Safe size, not too small, with sides 4cm or more
・Gentle shape with carefully chamfered and rounded corners

Reason 2: Unpainted, domestically sourced Japanese cedar material

Only domestically sourced Japanese cedar wood is used. No paint is applied, preserving the natural texture of the wood.

・Safe unpainted material, even if licked

・Allows you to feel the scent and warmth of wood

Reason 3: Long-lasting play that adapts to growth

Stacking is not the only way to play with building blocks.

0 years old: Grasping, licking, dropping

1 year old: Arranging, stacking, toppling

2 years and older: Shape play, pretend play

As play styles change with age, these are educational toys that can be used for a long time.

● Commitment to Safety ●

Because these are toys for babies, safety is our top priority.

・Size designed to prevent accidental ingestion

・Unpainted, carefully chamfered

・Manufactured and inspected domestically in Japan

*While we take every precaution for safety, please ensure adult supervision during use.

● Skills Fostered by Block Play ●

Block play contains many elements that promote a baby's development.

Manual dexterity, concentration, spatial awareness, imagination

Tsumikies building blocks are educational blocks that foster children's non-cognitive skills through "shape matching" and "sprout marks."
https://tsumikies.com/pages/%EF%BC%93%E3%81%A4%E3%81%AE%E3%82%AB%E3%82%BF%E3%83%81

Instead of thinking "I have to do early childhood education," we value "learning through play."

★ "Tsumikies Otehon" App to be released in May 2026 ★

The "Tsumikies Otehon" app is a new educational app that digitally recreates "Tsumikies building blocks," an educational block set that values the warmth of wood. The three-dimensional blocks, realistically representing wood grain and color, give the sensation of looking at real objects.
Furthermore, a major feature of this model app is that each creation does not have a name.
Deliberately not assigning names to creations encourages imagination without preconceived notions. What one child sees as a "house" may be seen as a "rocket" by another child, and neither is wrong.
We hope that by adding your own originality to the creations observed in this app, you will be able to create even more wonderful original block masterpieces in the real world.

Downloading is free, and 30 of the approximately 150 creations can be viewed for free.

▶ Download here

● Product Specifications ●

Product Name: Tsumikies Building Blocks (Cedar) Rectangular Prism 10-piece set

Material: Domestically sourced Japanese cedar

Contents: 10 pieces (rectangular prisms)

Target age: 0 years (6 months old) ~

Country of origin: Japan

● Also ideal as a gift ●

Baby shower, half-birthday, 1st birthday

These blocks convey the desire to "give something safe and long-lasting," regardless of gender.

● Frequently Asked Questions (FAQ) ●

Q. How old can a child be to use them?
A. They can be used from the time a baby can hold their head up and grasp objects.

Q. Is it safe to lick them?
A. They are made from unpainted, domestically sourced Japanese cedar wood, so there is no harm to the human body if put in the mouth.

Q. Is there any meaning even if they can't stack them?
A. Grasping, dropping, and touching are important forms of play for babies.

The first toy a baby touches.

Tsumikies building blocks were created with the primary consideration of being safe educational toys for 0-year-olds.

We hope you can incorporate them into your daily play with peace of mind.

*Due to the nature of wood, the wood grain and color may differ from the images.

*This product can be purchased in sets of 10 pieces.

If you wish to purchase 20 pieces, please set the quantity to "2". Please note that discounts are available for purchases of 2 or more sets at once.