run slick is an anti-chafing roll-on built by felipe niada, a chilean-born chemical engineer based in georgia who came up through product development and materials, not through the running industry. the formula is silicone-based, applies precisely, dries down in seconds, and holds a barrier through heat, humidity, and hours on your feet. it exists because nothing already on the shelf survived his own miles, full ironman training in a southern summer, where friction shows up early and stays all day. this is a barrier product built by someone who needed it to work on himself first.
the guy you don’t want running behind
the frustration for felipe was specific long before it was a business. inner thighs. the spot on his back where a hydration belt rides. the places that start to feel like trouble a few miles in, before the post run shower turns into the worst part of the day. he’ll tell you plainly that he doesn’t sweat, he drips, and that he’s the guy you don’t want running behind.
he tried what was already out there and none of it held. some felt greasy. some were messy to apply. some transferred straight onto clothing. most of them quit the moment sweat, humidity, or water got involved.
training for the full ironman, the thought that stuck was simple. he did not want to discover a hot spot hours into the race. he needed to either find something better or build it himself, and he had spent a career in materials, so he built it. the roll-on he landed on goes on clean, dries fast, stays comfortable, and keeps working without the grease or the stains.
run slick is still a young company, but the larger purpose behind it is simple: movement changes people, and we want to help people move more comfortably and more often.
— felipe niada, founder, run slick
the name came later, on a morning run with friends, trying to come up with something catchier than whatever he’d been calling it. one friend said "slick." a beat later another friend said no, even better, run slick. that was it.
the ironman finish. the training block that started all this.
not a repackaged balm
what separates run slick from the rest of the anti-chafing shelf is the same technical discipline felipe brought from that materials background. this is not a drugstore product with a new label on it. it’s a formula built to solve the exact failure points he had personally hit: grease, mess, transfer, and breakdown under real endurance conditions.
the standard he held it to was never "does it work at the start line." it was does it still work eight hours in, in a southern humidity that offers no hospitality, on a body that drips instead of sweats. that’s a higher bar than most of the category sets for itself.
setting up the lab.
232 miles
the product went through a long testing cycle before it became a company. friends turned into willing guinea pigs first, giving feedback from the user side while the formula was still being tuned. from there it got tested across ultras, trail races, triathlons, humid summer long runs, heavy rain, hydration vest friction points, sports bra lines, and foot hot spots, which is more or less the full map of where a body breaks down over distance.
one tester packed it as the backup choice for the 232-mile coast to coaster race and then discovered her usual anti-chafing product had run dry before she even started. run slick was the only thing she had left. asked how it went afterward, she paused, then said she’d applied it every morning and it lasted the whole day. that’s well past what the founder would officially recommend, and it got her over 200 miles of barrier protection.
skin, not fabric
it’s also worth being precise about how it’s meant to be used, because we tested this ourselves. run slick is a skin-first application. thin layer on clean, dry skin, a few seconds to dry down, then clothing or gear goes on over the top. used that way it forms a thin, dry-feeling layer right where the friction actually happens.
applying it directly onto fabric is a different test entirely, since fibers, knits, dyes, and finishes all behave differently once a product is asked to sit on the textile instead of the skin. the founder’s guidance is simple. skin, not fabric. a few seconds to dry. don’t over-saturate one spot.
that distinction is tied to what run slick was built to fix in the first place. even under direct fabric contact in our testing it came out of the wash better than the heavy, waxy residue the category has trained runners to expect. that cleaner feel, no buildup, comfortable on skin, holding through sweat and humidity, was the entire point.
he draws the line honestly here too. fabric-safe describes normal use on skin under clothing, not unlimited direct application to any fabric in any amount. if a transfer does happen, the fix is unglamorous but sound. wash the item per its own care instructions and skip high heat until it’s clean, since heat can set a mark into technical fabric. modern running apparel, pushing the limits of fabric tech, varies too much for a single universal answer.
the family after the 5k
the story the founder keeps coming back to isn’t the naming or the testing. it’s a family he met after a 5k whose child has special needs and wears adaptive gear every day. they tried run slick in its final testing stages and told him later that it had cut down the hot spots the straps caused. not on race day. in daily life.
that’s when he understood the product was never really about racing. it was about getting through a day without small frictions slowing you down.
an ainsley’s angels 5k. felipe pushes when he can.
run slick is just starting out. it took best in show for performance gear at hike expo colorado 2026, which he calls exciting validation, though he’s clear that the feedback that actually means the most is someone finishing a long run or a race or an adventure without thinking about friction once.
hike expo colorado 2026 best in show award for performance gear.
our take
run slick is what happens when someone with the right mix of know-how and curiosity gets frustrated enough on his own long runs to fix the problem properly instead of settling for what’s on the shelf. it’s built for exactly the miles where most anti-chafing products quit, the heat, the humidity, the vest straps, the eighth hour, and it has already proven itself well past marathon distance. explore run slick on the site, or go straight to the brand at runslick.com.