Textile Glossary · Construction · Double Knit
Interlock Knit
Interlock is a double-knit construction that interlocks two layers of jersey, creating a fabric that's smooth on both sides, more dimensionally stable, and heavier than single jersey.
Understanding the Term
When two layers become one.
Interlock fabric is produced on a double-bed circular knitting machine. Two sets of needles knit simultaneously, and the loops from each bed interlock with each other — hence the name. The result is a fabric with identical smooth faces on both sides.
Compared to single jersey, interlock is thicker, heavier, and more dimensionally stable. It doesn't curl at cut edges (a persistent annoyance with single jersey) and has less stretch. These properties make it popular for polo shirts, baby clothing, and garments where structure matters more than lightness.
For t-shirts, interlock is less common because the extra weight and reduced breathability work against comfort in warm conditions. A 180 GSM interlock feels comparable to a 220+ GSM single jersey in terms of warmth.
Why It Matters
How interlock compares to single jersey.
Understanding when double-knit makes sense.
01
Both Sides Smooth
Unlike single jersey (smooth face, textured back), interlock is smooth on both sides. This matters for reversible garments or when the inside touches sensitive skin.
02
Dimensional Stability
Interlock's double-layer structure resists distortion better than single jersey. It holds its shape more firmly through washing and wearing.
03
Weight Trade-off
The double construction adds weight. At the same yarn count, interlock is roughly 40–60% heavier than single jersey. For a summer t-shirt, that's a meaningful difference.
Our Standard
We chose single jersey deliberately.
Interlock is excellent fabric — just not for what we're making. Our 180 GSM single jersey in Supima cotton delivers the breathability, drape, and lightness that a premium everyday t-shirt demands. Interlock would push the weight above 260 GSM at our yarn count — too heavy for year-round wear.
180
GSM
Achievable in single jersey — would be 260+ in interlock
Related Terms
Explore more textile terminology.
See how Supima compares:
Common Questions
Interlock knit — your questions, answered.
Comparing knit constructions.
Neither is objectively better. Interlock excels in structure and stability. Single jersey excels in breathability and lightness. The best choice depends on the garment's purpose.
See It in Practice
Single jersey by choice.
Not by compromise.
We considered interlock. We chose breathability.
Free returns · 30 washes guaranteed · ₹1,299
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