What is Interlock Fabric? Soft, Dense & Perfect for Premium Tees

What is Interlock Fabric? Soft, Dense & Perfect for Premium Tees

If you’re looking for a smoother, thicker, and more luxurious alternative to single jersey — interlock is the fabric to know.

At HEM APPAREL, we use interlock for premium T-shirts, polos, babywear, and products that require both softness and structure. Here's why it's worth considering.


🧵 What is Interlock?

Interlock is a double-knit fabric, made using two sets of needles.
Unlike single jersey, interlock has two smooth sides — making it reversible and denser.

✅ It’s softer, stretchier, and more stable than single jersey
✅ Fabric lies flat — no curling at the edges


🔁 Interlock vs Single Jersey

Feature Interlock Single Jersey
Structure ✅ Thicker, more stable Lightweight, more flexible
Softness ✅ Soft on both sides One soft side, one textured
Curling edges ❌ No ✅ Yes
Best for Premium tees, babywear Basics, prints, fashion tee
Cost Higher ✅ More economical

📦 Why Use Interlock?

  • Smooth finish → perfect for minimalist or premium pieces

  • Dense weave → more opaque, covers better

  • Natural stretch → comfortable without needing spandex

  • Less prone to deformation → holds its shape wash after wash

✅ It gives garments a high-end feel without needing heavy weight


👕 Best Use Cases

  • Premium unisex tees

  • Kidswear and baby clothing

  • Base layers or light sweaters

  • Polo shirts

  • Modern uniforms


⚠️ Considerations

  • Interlock is more expensive than single jersey — use it where the touch & thickness matter

  • Not ideal for very lightweight, flowy designs

  • Because of its tight structure, it may not drape as freely


🧠 HEM APPAREL’s Tip:

Use interlock when you want a clean silhouette, soft structure, and upscale impression — especially in short-run premium tees or sensitive-skin products.

We help brands compare jersey and interlock with swatchbooks and GSM testing before committing.

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