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ProLock is an exciting new texturized polyester thread (DTY) designed for serging on fleece, knits, and stretch fabrics. Available in 73 colors, ProLock is colorfast and can be commercially laundered without risk of fading. With the bulk, elasticity, and flexibility popularized by “woollie-like” nylon threads, ProLock has all these traits plus the addition of a higher heat-resistance.

  • Available in 73 colors.

  • Tex 35 Texturized Polyester thread. Created specifically for Serger and Overlock machines.

  • ProLock is a strong Textured Polyester thread with great coverage and is widely-used for serging applications where stretch isn't critical.

  • ProLock is resistant to chlorine which makes it the best choice for children’s clothing as well as swim wear and active wear.

Recommended Needle and Tension Settings

ProLock is designed to work in the loopers of a serger/overlocker.


What Our Customers Say About Us

I have been using Bottom Line for hand sewing bindings ever since Bottom Line came out. It's like silk without all the shredding and twisting. It's a brilliant thread and my favourite for piecing as well--makes the seams lie very flat!

m.w.