Opinions expressed by Entrepreneur contributors are their very own.
The tampon hasn’t modified a lot because it was invented over 80 years in the past by a male physician named Earle Haas. Which may recommend the design was flawless — however ask the individuals who use them, and you will hear a unique story.
“Interval merchandise are unreliable in essential moments,” says athlete and entrepreneur Amanda Calabrese. “For athletes, that may very well be sporting moments, however for a mother, it may very well be dropping your youngsters off in school, or operating by means of the airport.”
As a substitute of accepting the established order, Calabrese and her Stanford classmate and fellow athlete, Greta Meyer, got down to rethink the product solely. In 2019, they created Sequel, the world’s first spiral tampon, engineered by and for individuals who really use it.
Associated: How This Tampon Firm Overcame Investor Data Gaps and Raised $11.2 Million
Engineering meets expertise
The concept for Sequel wasn’t born out of a want to earn money — it was about fixing an actual downside. Calabrese and Meyer met at Stanford, the place they each majored in mechanical engineering. However their connection ran deeper than teachers. Each have been high-level athletes: Meyer performed Division I lacrosse for Stanford, whereas Calabrese is a six-time nationwide champion in lifesaving, which is an entire different story.
“I’ve competed world wide sporting nothing however a star-spangled Workforce USA bikini, typically for 10-hour occasions on the seaside,” Calabrese says. “You are operating, sweating, consistently going from moist to dry, after which add your interval on prime of that.”
Meyer had comparable frustrations throughout her time on the lacrosse crew. She and her teammates, typically sporting white dwelling skirts, continuously struggled with unreliable interval merchandise.
“Within the locker room, they have been at all times speaking about how they might enhance the expertise,” Calabrese remembers.
Sooner or later in a shared entrepreneurship class, Meyer approached Calabrese with an concept: why not construct a greater interval product?
“She identified that we have been each engineering college students and athletes, and that this could be good for our Entrepreneurship challenge,” Calabrese says. “I used to be instantly on board.”
Calabrese and Meyer have been so dedicated to the concept they expanded it into their senior capstone. At Stanford, capstones require a working proof of idea. So the duo went above and past, elevating $50,000 in grant funding to proceed the challenge after commencement and show its potential past the classroom.
Whereas most faculty grads spent that first post-grad summer time stress-free or touring, Calabrese and Meyer traded in pool events for manufacturing plant excursions.
“We spent that summer time refining our concept and studying by means of Stanford’s accelerator, StartX,” Calabrese says. “We knew we would want funding to kick off R&D, so we targeted on crafting our pitch, and never lengthy after COVID, we closed a $1 million pre-seed spherical to get issues off the bottom.”
Associated: WNBA Legend Lisa Leslie on Constructing Legacy Past the Recreation
From the lockeroom to the lab
Beginning with a transparent downside gave the co-founders course, however there have been extra inquiries to be answered earlier than they might begin growing options.
“Now we needed to ask: Why aren’t these merchandise doing their job?” Calabrese asks. “And what precisely is the job they’re purported to do?”
After conferring with numerous feminine athletes, they decided that the first subject was what the business calls “bypass leakage.”
Upon deeper reflection, the duo realized this subject was the byproduct of a design flaw.
“Tampons have vertical channels that go prime to backside on the skin of the product,” Calabrese explains. “This successfully funnels the fluid away from the absorbent core and down the aspect of the product.”
Recognizing the mechanical inefficiency of this outdated design, the pair got here up with the idea for Sequel’s masthead product: the spiral tampon. By introducing a spiral into the tampon’s building, they created a horizontal move path alongside the present vertical channels. This design will increase floor space, promotes even absorption and helps forestall untimely leaks by disrupting the downward move.
“We spent years testing the fluid mechanics behind the design,” Calabrese says. “I actually have a video from our dorm room the place we have been illustrating these ideas.”
Finally, they began hand-pressing prototypes.
“Greta was in a full cleanroom go well with, manually making use of warmth and stress to create and take a look at each,” Calabrese remembers.
The capstone goes courtside
Since then, Sequel has flourished, turning into the primary tampon partnership within the historical past of the NCAA by sponsoring Stanford athletics. They’ve labored with Athletes Limitless, USL and Unmatched.
Now, the corporate is taking its subsequent massive step, partnering with one of many WNBA’s premier groups, the Indiana Fever. The founders reached out to Fever star Lexie Hull, who attended Stanford herself, and left with an NCAA nationwide championship and a bachelor’s AND grasp’s in administration science and engineering to indicate for it.
“Lexie remembered listening to about us for instance in one in all her entrepreneurship lessons,” Calabrese shares. “We reached out to her to be our first WNBA ambassador, and he or she was so excited.”
The partnership gives clear monetary upside for Sequel, however for Calabrese, the intangibles matter much more. “These athletes are position fashions,” she says. “1000’s of little women throughout the nation look as much as gamers on the Fever and see themselves in these athletes.”
She notes that the primary interval product somebody makes use of is commonly the one they follow for all times.
“Attending to work with real-life superheroes like Lexie Hull means all the pieces to the younger viewers we wish to attain,” Calabrese says. “However past that, we’re normalizing conversations round tampons and interval care, finally aiming for them to be seen as important recreation day gear, identical to soccer cleats.”
After six years of analysis, testing, growth, and navigating FDA business requirements, Sequel is starting to make waves in an business that hasn’t advanced in a long time.
“We imagine Sequel can dramatically enhance the expertise of athletes and followers in all places,” Calabrese says. “From little women taking part in softball to the mothers cheering them on, everybody deserves higher.”
With its spiral design and athlete-driven mission, Sequel is not simply redesigning a product. It is redefining the dialog round interval care.
