Can Coats test results be used for all footwear brands?
No, each major brand normally has own test procedures and requirements. However, for brands that request tests under ISO test procedures then Coats test results can be used. Coats labs are also able to perform tests following major brands’ test procedures and requirements.
What thread size should we use for military boots?
We recommend that as a minimum Gral/ Nylbond M30 is used on the upper. M20 will provide better seam strength. However, since military boots are used in wet conditions, Drybond GTX will provide comfort and dryness.
What SPI should we use to stitch adult uppers?
It depends on brands specifications, but generally major brands use range of 8-10 for adult upper shoes.