What Is Neoprene? What It Is Made Of, How It Works and Where It Is Used

What is neoprene?

Neoprene is the common name for polychloroprene, a synthetic rubber. DuPont researchers produced it in 1930, sold it at first as DuPrene, and adopted the name neoprene later in the decade. It was one of the first commercial synthetic rubbers, prized because it resists oil, weather and ozone better than natural rubber.

In textiles and sports gear, neoprene is used as a closed-cell foam: the rubber is blown with gas so it fills with millions of tiny sealed bubbles. That foam sheet is then laminated with a knitted fabric on one or both sides to make it tougher, more comfortable and easier to sew.

How is neoprene made?

1. Polymerisation: chloroprene is polymerised into polychloroprene rubber chips.
2. Compounding: the rubber is mixed with carbon black or pigments, blowing agents and curing chemicals.
3. Foaming and curing: the compound is heated in a mould; the blowing agent releases gas and the rubber cures into a foam block.
4. Slicing: the block is sliced into sheets of the required thickness, such as 2, 3 or 5 mm.
5. Lamination: nylon or polyester jersey is glued to one or both faces. Single-lined neoprene leaves a smooth rubber face that sheds wind and water.

Traditional neoprene starts from petroleum. Some brands use a limestone-based route, and several wetsuit makers now offer natural-rubber foams as alternatives, but these still use the same basic foam-and-laminate structure.

Why neoprene keeps you warm in water

A wetsuit does not keep you dry. A thin layer of water enters, your body warms it, and the gas-filled foam slows the loss of that heat into the cold sea. Thicker foam traps more gas and insulates more, but it is stiffer. That is why wetsuits are described as 3/2 or 4/3: thicker panels on the body for warmth, thinner panels on the arms and shoulders for movement.

Neoprene vs scuba fabric

In fashion, “scuba” usually refers to a thick, smooth double-knit fabric made from polyester or nylon with spandex. It borrows the look of neoprene but is a true knit with no foam. Read more in our guide to scuba double knit fabric.

Not all “neoprene” is the same

• CR (chloroprene) neoprene: true polychloroprene; flexible, durable and the best insulator. Used in quality wetsuits and gear.
• SBR foam: styrene-butadiene rubber, cheaper and less stretchy, often sold as neoprene in drink coolers, mouse pads and budget sleeves.
• SCR blends: a mix of SBR and CR, a middle ground for supports and accessories.
• Limestone-based and natural rubber foams: alternatives used by some wetsuit brands.

If performance matters, check the specification rather than relying on the word neoprene.

Smoothskin, single-lined and double-lined

Smoothskin (or glideskin) has a bare rubber face that sheds wind and water, which is why chest panels on cold-water wetsuits feel rubbery. Single-lined neoprene has fabric on one side and bare rubber on the other. Double-lined neoprene has fabric on both faces, which is tougher and easier to sew, and is the usual choice for braces, sleeves and fashion.

Printing on neoprene

Laptop sleeves, mouse pads and coasters are often made from neoprene foam faced with white polyester fabric, which can be printed by sublimation. Heat and pressure turn the dye into a gas that bonds with the polyester face. Pure rubber surfaces and cotton faces do not take sublimation dyes.

Where neoprene is used

• Water sports: wetsuits, rash vests with neoprene panels, boots, gloves, hoods.
• Medical and sport supports: knee, ankle, back and wrist braces that compress and keep joints warm.
• Protective cases: laptop and tablet sleeves, camera cases, drink coolers.
• Fashion: structured dresses, jackets and bags, often in thin neoprene laminated with jersey.
• Industrial: gaskets, hoses, seals, belts, cable jackets and vibration pads.
• Home and office: mouse pads, coasters, placemats and pet bowls.

Sewing and decorating neoprene

Thin, fabric-laminated neoprene can be sewn on a home machine with a stretch or ballpoint needle, a walking foot and a zigzag or flatlock-style seam. Thick wetsuit neoprene is glued edge to edge and blind-stitched, so the needle does not pass all the way through, which keeps water out. Raw edges do not fray, so many fashion pieces leave them clean-cut. If you want to paint or customise it, our guide on whether fabric paint works on neoprene explains what holds up.

How to care for neoprene

• Rinse in cool fresh water after every use, especially after salt water or chlorinated pools.
• Wash occasionally with a mild soap or wetsuit shampoo; avoid detergents with bleach.
• Dry inside out in the shade, then right side out, on a wide padded hanger. Folding over a thin hanger creases the foam.
• Keep it away from direct sun, heaters and hot car boots; UV and heat age the rubber.
• Never tumble dry, dry clean or iron neoprene.
• Repair small tears with neoprene cement before they spread.

See how neoprene compares with other technical fabrics in our fabric types and specifications guide.

Frequently asked questions