Socks are knitted garments that cover the feet, ankles, and part of the calf. After domestic care often change their size and elongation. Since it is necessary to supplement the European standards in terms of methods for determining the dimensional stability and elongation changes of socks that occur during these processes, this paper proposes a methodology for their testing. For this purpose, the dimensional stability in the length and width directions of relaxed socks was determined by measuring precisely defined distances in the foot and leg parts, while the elongation of socks was determined on the PC controlled strength tester at a constant rate of extension using a tensile force of 45 N and specially adapted clamps. Three groups of socks were tested, those made with the highest cotton content and in the knitting of socks insufficiently researched modal fibres blended with polyamide 6.6
