"Who drank this?" solved! Bottle cap markers for PET bottles - A set of 8, perfect for family outings -

When everyone in the family has the same drink,
it’s easy to end up with a plastic bottle where you suddenly think,
“Whose is this again?”

Especially when out and about or traveling,
you might worry about mix-ups or drinking the wrong one.

For families with children,
it’s something you want to avoid as much as possible
for cavity prevention and infection control.

That’s where this product comes in:
marker caps for plastic bottles.

What these caps can do:

 • Simply place them over the plastic bottle cap.
 • Easily identify whose bottle is whose by color and design.
 • Made of TPU material, they stretch slightly for easy attachment.
 • Compatible with most standard plastic bottle caps.
 • Comes in a set of 8, convenient for family use.
 • Attaches over the bottle lid, ensuring hygiene.

■ About the product

This product is a
marker cap that attaches to the cap part of a plastic bottle.

With a size slightly larger than the original cap,
it’s unlikely to get in the way even when attached,
allowing for comfortable use
from everyday life to outings.

Thanks to color-coding and animal designs,
even small children can easily
identify their own drinks.

They can be used in various situations,
such as family outings, travel,
school events, and sports activities.

■ About the set contents

This product is provided
in an 8-piece set.

There are plenty for a family of four,
and the number is designed to provide peace of mind
for use on outings or in case a replacement is needed.

By combining multiple colors and designs,
each family member can
naturally distinguish their own.

■ About the material and texture

This product uses TPU (thermoplastic polyurethane) material.

TPU is a material used in smartphone cases and shoe soles,
offering flexibility and elasticity,
allowing it to slightly stretch and contract
to fit the cap.

It's not too stiff,
making it easy to attach and remove.

※ Due to the nature of the material,
it has a slight sheen
compared to PLA products.

■ About attachment

You can use it by simply placing it over
the cap of your plastic bottle.

※ We have tested it with common plastic bottle caps, but
we do not guarantee perfect compatibility with all shapes.

■ About shipping

Typically,
we ship within 2 business days (excluding weekends and holidays).

■ About shipping fees

Shipping is free.

■ Please note

This product is manufactured using
3D printing (additive manufacturing).

Therefore,
layer lines may be visible on the surface, but
there are no issues with functionality or use.

We appreciate your understanding of this specification.

■ Product development background

There was a time when I almost mixed up
plastic bottles while out.

It's a surprisingly common situation
when everyone in the family has the same drink.

"I don't always carry a permanent marker to write names..."
"I've tried tearing off labels as a marker..."
"It would be great to have a marker that's instantly recognizable."

With these thoughts in mind,
I created this cap.

By changing colors and designs,
we prioritize making it easy to understand
and simple to use.