Single Jersey vs Interlock: Which Should You Choose?
Single jersey is a single-layer knit, interlock a double-layer one, and that structural difference changes everything. We compare them on surface, weight, durability and use.
Single jersey and interlock are two fundamental building blocks of the knit world, and they are often confused. Both are plain-looking cotton fabrics, but their knit structures — and therefore their surfaces, durability and uses — differ noticeably. This article clears up the difference.
Knit Structure: Single vs Double Layer
Single jersey (süprem) is a single-layer fabric knitted on one needle bed. Its face shows flat V loops, its back horizontal loops — the two sides differ. Interlock is a double-layer structure knitted on two needle beds; two jersey layers are interlocked, so both sides have the same plain look.
Surface and Appearance
Single jersey has two different sides, so t-shirt production has a defined front and back. Interlock is identical on both sides and gives a smoother, fuller look. Interlock does not curl at the edges, an advantage in cutting and sewing, whereas single jersey tends to curl.
Weight and Body
Due to its double-layer structure, interlock is heavier and fuller than single jersey knitted with the same yarn. This gives it a firmer, more opaque drape; the transparency you can see in thin jersey is absent in interlock. Single jersey stays light at 120–220 gsm, while interlock is usually produced at higher weights.
Durability and Stretch
Interlock is more durable and dimensionally stable thanks to its double structure, deforming less in the wash. Single jersey stands out with a more stretchy, breathable feel. Stretch can be increased in both with elastane content.
Which to Choose for What?
- Single jersey: Lightweight t-shirts, summer tops, printed promotional items and uses where breathability is the priority.
- Interlock: Premium t-shirts, baby and kids' wear, underwear and quality products needing opacity and body.
Conclusion
Single jersey and interlock come from the same family but serve very different purposes: jersey is light and breathable, interlock is full and durable. To determine the best fabric for your product and request a sample, get in touch with us.
