What is Interlock Fabric?

Interlock is a type of double-sided jersey knit. Unlike regular single jersey which only has one smooth face, interlock looks the same on both sides. Both sides are flat and soft, no wrong side. It does not curl at the edges easily — this is one big advantage compared to normal jersey fabric.

Interlock is produced on an double circular knitting machine. Two sets of needles work together to lock two layers of jersey knit into one single fabric. That is why we call it “inter-lock”. Regular single jersey machines cannot make interlock fabric.

Interlock is produced on an double circular knitting machine. Two sets of needles work together to lock two layers of jersey knit into one single fabric. That is why we call it “inter-lock”. Regular single jersey machines cannot make interlock fabric.

Most interlock fabric you see for clothing has these specs:

• Usable width: 160cm – 180cm (after finishing)
• Common GSM: 110gsm, 140gsm, 180gsm, 200gsm, 220gsm, 240gsm, 260gsm

Light 110–140gsm made of 100% polyester for thin sportswear. Heavy 220–260gsm made of cotton for warmer clothes, kids wear and uniforms.
We can adjust gsm and width according to buyer’s request.

• Soft, smooth and skin-friendly
• Good stretch, bouncy but not too loose
• Less shrinkage than basic jersey if pre-shrunk properly
• Both sides look identical
• Thick, warm, opaque, not easy to see through
• Does not roll up along cut edges

Interlock is very versatile for apparel:

• Sublimation print
• Baby clothing, rompers, kids wear
• Long sleeve t-shirts, casual tops
• Loungewear, pyjama sets
• Sports wear, yoga wear
• Uniforms, school wear
• Hoodies and lightweight sweatshirts

Single jersey is lighter, cheaper, but rolls at edges.

Interlock is thicker, heavier, stable, double-sided, great quality for high-end knit garments.

If you are sourcing knit fabric for your clothing line, interlock is a reliable choice. It works well for solid dyed, printed, cotton, cotton spandex and bamboo blend options.