YLI Wonder Invisible Thread

YLI Wonder Invisible Thread


Item # prd56702


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Additional Information


The YLI Wonder Invisible Thread Size 0.004mm 1500Yds is ideal for use in fabrics as an under-thread or to seamlessly blend with other threads without creating contrast for your fabric designs. Made of 100% nylon, this invisible sewing thread is sturdy and long-lasting. It can be used in the sewing machine, bobbin, and serger for machine quilting, hand embroidery, machine beadwork and couching of heavy threads. This pack includes 1500 yards of invisible nylon thread. Available in different shades, each sold separately.

  • Brand: YLI
  • Includes one spool of thread
  • Length: 1500 yards
  • Content: 100% nylon
  • Thread Size: 0.004 mm
Shipping & Returns
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  • Web Source: This item is shipped directly from the supplier, please allow an additional 1-3 days processing time.


Standard Delivery

You can usually expect delivery within 6-10 business days from your order date (business days are Monday-Friday, excluding Holidays).  You’ll receive an email with tracking information when your order is shipped.   Please allow up to 5 business days to receive your tracking information.  

Some items sent directly from our suppliers may take longer, and will ship separate from the remainder of your order. 

Please note that Singer sewing machines cannot be shipped to Guam, Puerto Rico or the U.S. Virgin Islands or to military bases overseas.

Expedited Delivery

Most items will give you the option to upgrade your shipping method for faster delivery.  If you choose to upgrade your shipping method, your order must be received by 11:00 AM ET or your order may not be processed until the following business day. 

For more details & pricing.  See our Full Shipping Policy >


Creativity shouldn’t be complicated, so you can return items for FREE any time to our stores for a hassle-free refund with a smile. You can also return online items by mail.  See Full Return Policy for Details>