Oroblù's corn-based tights: what's really inside

In May 1940, when nylon stockings went on sale across America, DuPont's publicity claimed the miracle fibre was made from "coal, air and water". Eighty-five years later, a pair of tights made in Ceresara, a small town near Mantua in northern Italy, is trying to rewrite that recipe: part of the nylon and part of the elastane now come from corn. They are called Bio-Derived Sneakers Tights, they are made by Oroblù with The LYCRA Company, and they were billed as the first legwear to use the plant-based version of LYCRA fibre. We read the label, traced the supply chain and checked what has actually changed.

Two styles, one label worth reading

The line has two styles, Wave and Spirit, and the name tells you what they are for: trainers and ankle boots. Both have a reinforced sole, a tougher knit in the zone that rubs inside the shoe, which is exactly where tights worn with flat, closed footwear wear through first. Oroblù's product pages are admirably specific:

• Wave: semi-opaque, 40 denier, in four colours (black, violet, chocolate and a green called Botanic).
• Spirit: 30 denier, in black.
• Composition of both: 94% polyamide (nylon), 6% elastane.
• Sizes: S/M and L/XL.
• Price: €17.50 on the brand's web shop at the time of writing.
• Care: delicate wash at 30°C max, no tumble drying, no bleach, no iron.

The interesting part is in the next two lines. The nylon is Q-GEO by Fulgar, which contains 46% bio-derived material; the elastane is LYCRA EcoMade, with 70% bio-derived material. Everything else, meaning more than half the nylon and 30% of the elastane, still comes from fossil sources.

In other words, the 70% figure in the press releases applies to 6% of the garment. Doing the sums with the declared percentages, and allowing for the fact that we don't know the exact yarn weights, the plant-derived share of the whole pair comes out at just under half. These are not tights "made of corn". They are synthetic tights in which nearly half the raw material doesn't come from oil, which is still something that did not exist on a shop shelf a few years ago.

From field to yarn

A step back first. Elastane is a fairly young invention: according to LYCRA's own history, DuPont chemist Joseph Shivers developed "Fiber K", the future LYCRA, in 1958, and the company dates to 1982 the moment the fibre transformed hosiery, bringing lasting comfort and fit where nylon had long since replaced silk. The renewable version, made with US Midwest corn, had its global commercial launch in 2025, and Oroblù is not the only adopter: LYCRA's site also lists swimsuits by arena and jeans by AGOLDE.

To see where the stretch comes from, go to Eddyville, Iowa. There Qore, a joint venture between America's Cargill and Germany's HELM, has started producing QIRA, which HELM describes as the world's first large-scale 1,4-butanediol (BDO) made from corn: a $300 million plant with capacity for 66,000 tonnes a year, formally opened on 22 July 2025 and supplied mainly with corn grown within 100 miles. BDO is a chemical building block normally made from fossil feedstocks; the process, as Knitting Industry reports, starts with fermenting glucose extracted from corn starch.

The LYCRA Company announced its partnership with Qore back in 2022. Its renewable fibre page now cites 70% renewable content from Midwest corn, performance identical to conventional spandex, and the potential to cut the fibre's carbon footprint "by up to 45%", based on a comparative life-cycle assessment by the consultancy Ramboll. Two things to bear in mind: "up to" means a ceiling, and the comparison is about the fibre, not the finished tights.

The nylon, meanwhile, is Italian. Fulgar, based in Castel Goffredo, a few miles from Ceresara in the heart of Italy's hosiery district, describes Q-GEO as a yarn with around 46% bio-based raw material, made from industrial corn grown on land that does not compete with food crops; the company adds that it uses 40% of the kernel, with the rest going to food and animal feed. That matters, because the first objection to any crop-based material is always the same: food.

Oroblù: a hosiery brand with a lab habit

Experimenting on everyday tights is not out of character. According to the brand's own history, CSP International was founded in Ceresara in 1973 by the Bertoni family, and Oroblù was launched in 1987. In 1994 Francesco Bertoni developed Shock Up, a shaping but comfortable tight; the 2000s brought All Colors, born, as Bertoni tells it, from his dream of making tights in 40 colours. In 2021 Oroblù launched Eco Sneakers, tights in recycled yarn developed with LYCRA: the Bio-Derived line is effectively the sequel.

In 2023, for the group's 50th anniversary, Oroblù and LYCRA presented a "tights of the future" project at the Triennale in Milan, as reported by Pambianco. Among the findings: a clear demand for more resistant, longer-lasting pairs, and sustainability as a recurring theme. Three years on, a reinforced sole and a partly plant-based yarn look like a direct answer to both.

In The LYCRA Company's launch announcement, Carlo Bertoni, CEO of CSP International Fashion Group, said the collaboration "helps us pursue our mission: to make beauty and comfort synonymous with responsibility."

And in the shops?

Honesty is needed here. The tights have been sold on Oroblù's web shop since the end of November 2025, and both The LYCRA Company and FashionUnited announced a wider rollout into physical shops from September 2026. As of late September we could find no public confirmation that this has happened: no press release, no coverage in the trade press. On the brand's site the styles are still flagged as new in and, on the day we checked, the black Wave was out of stock online. If you are hoping to find them in a shop, call ahead.

How to choose them (and make them last)

• Start with the shoe. The reinforced sole is built for trainers and ankle boots; with a low-cut court shoe it serves no purpose and may show.
• Pick your denier for the season. The 40 denier semi-opaque Wave gives more coverage and handles autumn better; the 30 denier Spirit is lighter.
• Always read the label. "Bio-derived" does not mean "natural" or "biodegradable": here it means part of the raw material comes from a plant. The composition tells you how much.
• Wash as the care label says. 30°C max, delicate cycle or by hand, ideally in a mesh laundry bag, never in the tumble dryer: stretch fibres suffer in the heat, whatever their origin.
• Rotate your pairs. Alternating gives the elastane time to recover and helps every pair last longer.

More honest tights, not perfect ones

Tights remain one of the hardest things to make sustainable: fine, stretchy, often binned after a handful of wears. Oroblù's Bio-Derived Sneakers Tights do not solve the end-of-life problem, but they tackle the raw-material one with numbers you can check, printed on the product page rather than buried in a press release. And they do it on a €17.50 pair, not a runway piece. In 1940 the promise was a fibre made of "coal, air and water". Today's is more modest and perhaps more credible for it: a little less oil, reinforcement where tights actually wear out, and a label anyone can read.