How vegan leather is made, from pleather to mushrooms

Walk into most stores and the tag that says “vegan leather” is describing a fabric coated in polyurethane or, less often now, polyvinyl chloride (PVC). It is the same category of material that clothing tags called pleather for decades, before the vegan leather label took over around the mid 2010s as a marketing refresh. Nothing about the chemistry changed. A woven or non-woven backing, usually polyester, gets a plastic skin bonded or coated onto its surface, embossed with a grain pattern to look like animal hide, and finished with a topcoat. That is the product behind the overwhelming majority of vegan wallets, jackets, car interiors and shoes on the market in 2026.

This isn’t a knock on the people buying it. The confusion is reasonable, because the industry built the term to be reassuring without being specific. “Vegan” tells you no animal died to make it. It tells you nothing about whether the material is fossil-derived plastic, which most of it is.

Polyurethane leather is built one of two ways. In wet-process manufacturing, PU resin is dissolved in the solvent dimethylformamide (DMF) and coated onto a fabric substrate, which is then dipped into water baths. The water pulls the DMF out and coagulates the PU into a soft, microporous layer that gives the material a leather-like hand feel and some breathability. In dry-process manufacturing, the PU solution is cast onto release paper, dried with heat, laminated to the fabric backing, and the paper is peeled away. Wet process gives a softer, more supple finish and is generally used for higher-end synthetic leather; dry process is cheaper and more common in mass-market goods.

The DMF question matters because DMF is a reproductive toxicant and a regulated air pollutant. In modern factories with closed-loop recovery, most of the solvent is captured and reused rather than released. In older or lower-cost facilities, especially in parts of the supply chain without strict environmental enforcement, it is not. There is no reliable way for a shopper to tell which process made a given product from the finished item alone, since both wet and dry PU end up looking similar on a shelf.

PVC leather works differently: PVC resin is plasticized with phthalates to make it flexible, then calendered or coated onto a backing. PVC is around 57 percent chlorine by weight, and its production and incineration can release dioxins, which is the main reason major brands including Nike, Puma and Adidas have been shifting new product lines toward PU and plant-fibre composites instead. PVC has not disappeared. It is still common in low-cost furniture upholstery and some footwear, because it is cheaper than PU, but it has lost ground in fashion over the past decade.

The coating gets the attention, but the backing fabric does most of the structural work. A PU leather laminated onto a tight, high-denier woven polyester will resist stretching and tearing far longer than the same coating on a thin non-woven felt, which is why two products both labeled “vegan leather” can have completely different lifespans. Manufacturers rarely disclose backing weight or weave on a retail tag, so the practical signal is price and weight in hand: a bag that feels papery and light for its size is very likely riding on a thin backing.

Tanned animal hide ages by darkening, softening and taking on creases and sheen where it flexes, the patina that makes worn leather goods look better over years of use. PU and PVC coatings do the opposite. The plastic layer is bonded to the backing rather than being a continuous material through its thickness, so under repeated flexing it develops surface cracks, then peels or flakes away from the fabric underneath, a failure mode usually called delamination. It shows up first at fold points: the crease of a wallet, the toe box of a shoe, the handle drop of a bag.

There is no single number for how long PU leather lasts, because it depends heavily on the coating thickness, the backing and how the item is used, but tanneries and repair shops routinely report PU coatings failing within two to five years of regular use, well short of the decade-plus service life of a well-made full-grain leather good. Heat, direct sun and folding accelerate it. A PU jacket stored folded in a hot car for a summer is a common way to watch it crack within a season.

The genuinely new part of this category is a wave of materials that swap some or all of the plastic for agricultural byproducts or fungal biomass. None of them is a drop-in replacement for tanned hide yet, and the honest reading requires checking whether the plant or fungal content is the structural material or just filler bound in polyurethane.

The pattern across the table is consistent: the fibre crops (pineapple, cactus, apple, grape) mostly still need a polyurethane binder to become a usable sheet material, because plant fibre alone doesn’t hold together or flex the way a coated textile does. Fermented bacterial cellulose and some mycelium tanning processes are the exceptions, genuinely low-plastic or plastic-free, but they are also the smallest and least stable part of the market. Two of the highest-profile mycelium ventures, Bolt Threads’ Mylo and MycoWorks’ South Carolina operation, both stopped production in the 2023 to 2025 window after failing to scale the economics, which is the honest state of that technology going into 2026: real, but not yet at volume.

Animal leather’s environmental case rests on two things: the land, feed and methane footprint of the cattle it comes from, since hide is a co-product of the beef and dairy industry, and the pollution load of chrome tanning, which uses trivalent chromium and produces wastewater and sludge that needs proper treatment to avoid contaminating waterways, a documented problem in tanning regions with weak enforcement, notably parts of Bangladesh and India. PU and PVC leather’s case rests on the opposite: both are made from fossil-derived polymers, both shed microplastic as they wear and delaminate, and neither biodegrades at end of life, so a cracked pleather jacket becomes landfill plastic rather than compost.

The tool that was supposed to make this comparison simple, the Higg Materials Sustainability Index run by the Sustainable Apparel Coalition, scored synthetic leather better than bovine leather on its per-kilogram metrics. The global leather industry, through bodies including the International Council of Tanners and the Leather and Hide Council of America, formally challenged that score, arguing the MSI used outdated and unrepresentative data and methodologies that penalized leather's numbers unfairly. The Norwegian Consumer Authority separately ruled that the outdoor brand Norrona could not use Higg MSI data in consumer marketing in 2022, on the grounds that the underlying data was partly outdated and unsuited to comparisons, and the Sustainable Apparel Coalition paused consumer-facing Higg MSI labels globally in June 2022 pending an independent review. The practical upshot: neither material has a clean, uncontested life cycle assessment, and a firm claim that either one is simply “better for the planet” is not supportable from the evidence as it stands.

A tag or product description that says “vegan leather” or “faux leather” with no other detail is describing PU or PVC unless proven otherwise; treat that as the default assumption. Terms that add real information: “PU coated” or “polyurethane coated” confirms the plastic, and tells you almost nothing about the backing quality. “Bio-based content 30%” or similar percentages, when a brand discloses them, describe how much of the polymer itself was made from plant-derived feedstock rather than petroleum, which is a manufacturing detail about the plastic's origin, not a measure of how much of the finished material is plant fibre. A product built from Piñatex, Desserto or a similar named material will usually say so by brand name, since it’s a selling point; if a listing just says “cactus leather” without naming a supplier, ask the brand directly what binds it and in what ratio, because the honest answer is usually available if you ask, even when it isn’t on the tag.

Vegan leather is a rebrand, not a new invention. Most of what carries the label is polyurethane or PVC on fabric, built the same way pleather always was. The interesting exceptions, mycelium, bacterial cellulose, cork, are real but small, and the fibre-crop materials that get the most press, pineapple and cactus leather, are still part plastic under the marketing. None of that makes the material bad. It makes the label a starting point for a question, not an answer.