Why Prement

Why Prement

We didn't start with a ring. We started with a question: how can we make at-home insemination better?

A Decade of Listening and Improving

For over a decade, we've been listening. To first-time users, to couples who've tried everything, to medical professionals who wanted to help their patients at home. Every update, every improvement, has been driven by real feedback from real people.

What started as a simple syringe kit has evolved into a thoughtfully designed product that addresses the deepest frustrations people faced. This is not a redesign for trends. This is a decade of iterating toward better.

2016
It Started with a Simple Idea
In Japan, Only Style Inc. launched with a straightforward mission: give people a private, comfortable way to try insemination at home.
2017–2019
The First Generation
Our original syringe-style kit became Japan's first dedicated at-home insemination product. It worked — but users told us it could be better.
2020–2022
Listening to Real Users
Over 2.5 million units sold. Thousands of reviews. We heard the same feedback again and again: reduce waste, improve comfort, make it simpler.
2023
The Ring Was Born
We redesigned from scratch. The result: a one-piece ring design that addresses the three biggest frustrations with traditional syringe kits.
2024–Present
Bringing It to the World
Now available in the US with the same quality standards, medical-grade materials, and attention to detail that made us Japan's number one.

What Sets Prement Apart

Pioneer Since 2016

We created the category in Japan. Every improvement since then has been driven by real user feedback — not trends.

Designed in Japan, Made in Japan

Every component is manufactured and sterilized in Japanese facilities under strict quality controls.

Continuous Improvement

From our first syringe to the ring design, every generation has been shaped by the voices of real users.

2.5M+
Units sold across Japan
1,100+
Self-reported pregnancies
Since 2016
Pioneer in the category
Patent
Ring design protected

Quality You Can Trust

Medical-grade soft silicone
BPA-free, Latex-free materials
Individually sterilized and sealed
Single-use for maximum hygiene
Developed under OB-GYN medical guidance
US-patented collection sheet technology

The Result of 10 Years of Improvement

See why millions of families trust Prement.

See The Ring → How It Works →