Jersey fabric is a knitted textile that can be made from cotton, polyester, wool, silk, or synthetic blends. Unlike woven fabrics, jersey gets its defining characteristics from its knit construction rather than any single fiber. That construction is what gives it the stretch, softness, and drape that make it one of the most widely used fabrics in modern clothing.
The Fibers Used in Jersey
Cotton is the most traditional and still the most common fiber in jersey fabric. A basic cotton jersey, the kind used in most t-shirts and underwear, is often 100% cotton. But modern jersey comes in a wide range of fiber combinations, each tuned for a different purpose.
Cotton-spandex blends are popular for everyday clothing that needs a little give. These typically run 90 to 95% cotton and 5 to 10% spandex, keeping the soft, breathable feel of cotton while adding stretch for comfort. Polyester-spandex blends, common in activewear and sports jerseys, usually contain 80 to 90% polyester and 10 to 20% spandex. Nylon-spandex blends follow similar ratios and show up in leggings and compression garments. Wool jersey, often used in dressier garments, has a heavier hand and better insulation. Silk jersey exists too, though it’s less common and more expensive.
The amount of spandex in the blend controls how stretchy the final fabric feels. A touch of spandex at 3 to 5% adds light stretch for casual wear. Blends with 15 to 20% spandex create the high-stretch, form-fitting feel you’d find in compression clothing or performance leggings. A four-way stretch jersey, the kind that moves in every direction, often uses a ratio like 92% polyester and 8% spandex.
What Makes Jersey Different From Woven Fabric
The word “jersey” refers to how the fabric is constructed, not what it’s made from. Jersey is knitted, meaning its yarn loops through itself row by row, rather than being woven with two sets of yarns crossing at right angles. This loop structure is the reason jersey stretches naturally, even without any spandex in the blend. It also makes jersey softer, more fluid in its drape, and less prone to tearing or fraying than woven fabrics, because there are fewer rigid intersection points between yarns.
The fabric originated in the Middle Ages on the island of Jersey in the Channel Islands, where it was used to make fishermen’s sweaters and men’s underwear. It stayed relatively niche until the 20th century, when designers began using it for women’s fashion and casual clothing.
Single Jersey vs. Double Jersey
Jersey comes in two main structural types, and the difference matters when you’re shopping or sewing.
Single jersey is the most common type. It’s the fabric in most t-shirts, underwear, and swimwear. It’s lightweight, versatile, and comes in a range of weights depending on its purpose. One side shows smooth vertical columns (the face), while the other side has a slightly different texture with horizontal rows. Single jersey has one notable quirk: when you cut it, the edges curl and can run, similar to a ladder in stockings. This makes it a little trickier to sew at home.
Double jersey, sometimes called interlock, is made by knitting two layers of fabric and linking them together. This uses more yarn, which makes the fabric heavier, thicker, and more expensive. The payoff is stability. Double jersey looks the same on both sides, doesn’t curl at the edges, and holds its shape better. It’s a popular choice for structured garments like ponte pants, blazers, and dresses that need more body than a t-shirt knit provides.
How Fabric Weight Affects the Feel
Jersey spans a wide range of weights, measured in grams per square meter (GSM). A lightweight summer t-shirt typically falls between 120 and 160 GSM, feeling thin and airy against the skin. A standard year-round tee sits in the 160 to 190 GSM range. Heavyweight jersey, the kind with a more substantial, premium feel suited to cooler weather, runs between 200 and 300 GSM. The fiber choice and the weight together determine how the fabric performs: a 150 GSM cotton jersey will feel completely different from a 250 GSM polyester-spandex blend, even though both are technically “jersey.”
How Fiber Choice Affects Care
The fiber content of your jersey fabric determines how you should wash it and what to expect over time. Pure cotton jersey typically shrinks 3 to 5% in both length and width, mostly during the first wash. Washing in cold water and air drying minimizes this. Polyester and nylon jerseys resist shrinkage almost entirely and dry faster, which is part of why they dominate activewear. Blends split the difference, with the synthetic component helping to stabilize the cotton.
Cotton jersey wrinkles more easily but breathes better. Polyester jersey resists wrinkles and wicks moisture but can trap odors over time. Wool jersey needs gentler washing but naturally regulates temperature. Knowing what your jersey is made of tells you not just how it will feel on day one, but how it will behave after 50 washes.