🏆 TIME Best Inventions of 2025
The first major tampon innovation in almost 100 years.
What started as a question from two Stanford engineers became a patented spiral tampon backed by 31 patents and FDA clearance. Sequel replaces traditional straight grooves with a patented spiral design that promotes more even absorption to help reduce premature leaks, reimagining a product that had barely changed in almost 100 years.
Try Sequel Now →
Free shipping over $35 · No subscription required
🏆 TIME Best Inventions of 2025
The first major tampon innovation in almost 100 years.
What started as a question from two Stanford engineers became a patented spiral tampon backed by 31 patents and FDA clearance. Sequel replaces traditional straight grooves with a patented spiral design that promotes more even absorption to help reduce premature leaks, reimagining a product that had barely changed in almost 100 years.
Try Sequel Now →
Free shipping over $35 · No subscription required
FEATURED IN:
Tampons haven't changed much
in almost 100 years.
Traditional tampon designs haven't meaningfully changed in decades.
Sequel's patented spiral technology was created to promote more even absorption and help address premature leaks before capacity.
IT'S NOT JUST A NEW TAMPON.
IT'S A NEW DESIGN.
It wasn't rebranded.
It was re-engineered.
Instead of accepting the same design women have used for generations, Sequel engineers created a patented spiral path that promotes more even absorption throughout the tampon.
Our patented spiral technology helps promote even absorption throughout the tampon, so you can spend less time wondering and more time moving.
THE FIRST MAJOR INNOVATION IN ALMOST 100 YEARS.
Created by Stanford engineers. Backed by science. Recognized by leading publications.
Patented spiral path design
Designed for even absorption
Founded by female engineers and athletes
OEKO-TEX Standard 100 certified
Typical
Tampons
BUILT ON ENGINEERING. BACKED BY SCIENCE.
FDA 510(K) CLEARED
Class 2 medical device. A high bar for product safety and efficacy
PATENTED SPIRAL
Registered patent. No other tampon like it on the market
OEKO-TEX STD 100
Every component tested for harmful substances. Independently verified.
SYNTHETIC DYE-FREE
No synthetic dyes.
Safe and non-toxic.
"AS ATHLETES, WE COULDN'T FIND A TAMPON WE COULD RELY ON. SO WE CREATED ONE."
TWO STANFORD ENGINEERS. ONE OVERDUE FIX.
Amanda Calabrese and Greta Meyer weren't looking to start a company. They were athletes — dealing with the same period product failures every woman deals with. A competition in a swimsuit. A lacrosse game in a white skirt. As engineers, they asked a different question: Why hasn't anyone actually fixed this?
Years of R&D, a patent, and an FDA clearance later — Sequel exists. This tampon wasn't rebranded. It was re-engineered.
Sequel was stress tested first by athletes and designed for every range of motion.
Stanford Engineers · FDA Cleared · Patent Holders
TRUSTED BY WOMEN. RECOGNIZED BEYOND THEM.
FREQUENTLY ASKED QUESTIONS
Have any more questions? Let us know!
Is the applicator hard to use?
The Sequel applicator is compact, which means it needs to extend before insertion — one extra step vs. a traditional applicator. Each box comes with step by step instructions for use, and our team to support if you have any product questions.
Will it actually feel different?
The spiral is designed to promote even absorption, and is designed to be more comfortable. Customers consistently describe it as feeling less noticeable — which is exactly the point.
Is it safe? Are the materials clean?
Yes — FDA 510(k) cleared as a Class 2 medical device, OEKO-TEX Standard 100 certified, and synthetic dye-free. Every component is independently tested.
Do I have to subscribe?
No. Buy a box and try it. If you love it, Subscribe & Save gives you 10% off and automatic monthly delivery. Easy to start. Easy to cancel.
What's the return policy?
If Sequel doesn't work for you, please contact the team directly support@trysequel.com.
READY TO EXPERIENCE THE DIFFERENCE?
Sequel Spiral Tampons — Regular | Super | Combo
Discover why Sequel has earned recognition from leading publications and why thousands of women are making the switch.
FDA Cleared · Patented Spiral Design · OEKO-TEX Certified · Starting at $19.99 for 32ct
Free shipping over $35 · No subscription required.