Gutermann Sew All Thread in blue - colour 759.  These threads are 100 metres in length.  Various colours are available.
  
This is great quality thread, suitable for use with all fabrics whether sewing by hand or machine, and for many applications - seams, overlocking, button holes, fine ornamental and decorative stitching. 
 
Sew-All thread combines the excellent sewing properties of silk with the strength and durability of polyester. Guaranteed no-twist and lint free. A soft and supple thread, light resistant and colour-fast, and in an extensive range of brilliant colours with a silk-like gloss. 
 
Recommended machine needle: Universal, size 70 to 90. 
 
100% polyester thread.
 
Pictures have been taken in natural light... we have tried our best to get them as close to the actual colour as possible but please be aware that colours can vary from screen to screen compared to reality.