On a winter test in northern latitudes, Helly Hansen's BiFrost Boot holds a temperature rating of -40C, a number that would normally require a thick wall of synthetic loft. The boot is thin. The reason it works, according to Solarcore's own technical materials, is a layer of aerogel-infused foam co-developed with OROS Labs [Solarcore.tech]. That single product detail is the clearest expression of what the Portland company has been working toward for a decade: making the warmest material humans have engineered thin enough, flexible enough, and cheap enough to slip inside things people actually buy.
OROS Labs, founded in 2014 by Michael Markesbery and Rithvik Venna, started life as a direct-to-consumer outerwear brand built around a proprietary aerogel composite the founders trace back to NASA collaborations [Startup Intros]. Aerogel, the lowest-density solid ever measured, has been a laboratory curiosity since the 1930s and a spacecraft insulator since the 1990s. Its commercial problem has always been the same: it is brittle, dusty, and difficult to manufacture into anything you would want to wear or sit on. OROS spent ten years solving the format problem rather than the chemistry problem, and the result is Solarcore, a patented aerogel-based insulation that bends, compresses, and laminates [Crunchbase].
The more interesting move came in April 2024, when the company raised $22 million in a round led by Airbus Ventures and announced it was spinning off the apparel business under license to focus on Solarcore as a materials supplier [Bloomberg, April 2024]. Other backers in the cap table include Culper Ventures, Path Ahead Ventures, Fathom Fund, Kenneth Industrial Products, Advance Thermal, and Cashmere Fund. The pivot is the story. OROS is no longer trying to compete with Patagonia for shelf space. It is trying to be the insulation that goes inside the next generation of products from Merrell, L.L.Bean, Cabela's, and Helly Hansen [Cashmere Fund, Solarcore.tech].
Why the bet could be big
Markesbery told Forbes the addressable market for Solarcore beyond apparel and footwear is $459 billion, a figure that sweeps in building envelopes, cold-chain logistics, electric vehicle battery packs, and military shelters [Forbes, April 2024]. That number is large enough to deserve squinting at, but the underlying logic is sound. Anywhere a designer is fighting a tradeoff between thermal performance and thickness or weight, a thinner insulator with the same R-value is worth real money. EV battery packs lose range to thermal management volume. Cold-chain shippers lose payload to foam walls. Soldiers lose mobility to layered kit. The buyer in each case is not a consumer comparing jackets in a store. It is an engineer with a spec sheet.
That is also why Airbus Ventures leading the round matters more than the dollar figure. Aerospace is a category where a few grams per square meter of weight savings, multiplied across a fleet, justifies a premium material. If Solarcore can qualify into aerospace interiors or cargo insulation, the unit economics of the licensing model start to look very different from selling parkas one at a time.
Series A and B (Apr 2024) | 22 | $M
Prior disclosed funding | 14.5 | $M
Total disclosed | 36.5 | $M
Back of envelope
A rough sense of the prize: a mid-range EV battery pack uses on the order of 5 to 10 kilograms of thermal management foam and barrier material. If Solarcore licenses at, say, $30 per kilogram of installed material (estimated, in line with specialty thermal materials), and global EV production runs at roughly 14 million units per year and climbing, the served market in just that one vertical is somewhere in the low single-digit billions of dollars annually. You do not need to believe the full $459 billion headline to believe Solarcore can be a serious materials business. You need to believe it can win two or three industrial verticals beyond outerwear. That is a much more tractable question.
The team and traction
Markesbery, the co-founder and CEO, has been running OROS since its undergraduate days at Miami University, where the original aerogel work began [Thunder.vc]. Co-founder Rithvik Venna remains on the founding team. The licensing announcements with Helly Hansen, Merrell, L.L.Bean, and Cabela's give the company a roster of brand-name proof points that materials suppliers usually need years to assemble [Cashmere Fund, Solarcore.tech]. The Series B closed at $22 million in April 2024 with Airbus Ventures leading [Bloomberg, April 2024], bringing total disclosed funding to roughly $36.5 million.
The honest counterfactual
What the bears say: the insulation business is dominated by PrimaLoft and Polartec, two incumbents with decades of relationships across outdoor brands and a deep bench of synthetic chemistries that keep getting incrementally better and cheaper. A licensing-first strategy means OROS is asking those same brands' procurement teams to qualify a new material against a known one, which is a long sales cycle measured in product-development seasons rather than quarters. What the bulls answer: the named launches with Helly Hansen, Merrell, L.L.Bean, and Cabela's suggest those qualification cycles are already well underway, and the spin-off of the apparel arm removes the awkward conflict of competing with the brands OROS now wants as customers [Forbes, April 2024]. The thinner-at-the-same-warmth pitch is also one PrimaLoft cannot easily match without its own aerogel program.
What to watch
The next twelve months should reveal whether Solarcore can break out of outerwear and footwear into a genuinely industrial customer. Watch for an announced design win in EV thermal management, cold-chain logistics, or aerospace interiors, the categories that would validate the $459 billion framing. Watch for a Series C, which a materials company scaling to industrial volumes will eventually need to fund manufacturing. And watch the licensing model itself: royalty rates and minimum volume commitments are where this business either becomes a high-margin IP company or a thinly capitalized supplier squeezed by larger customers.
The company OROS Labs has to beat is PrimaLoft. PrimaLoft owns the mental shelf space inside almost every parka and sleeping bag sold in North America, and it got there by being the insulation engineers specified without thinking. Solarcore's job, one boot and one battery pack at a time, is to make engineers think again.