Pack of 2 pairs of invisible trainer socks. Thanks to their tight non-slip fit, these trainer socks ensure a perfect fit.Product details •  Tightened fabric in the middle •  Anti-slip silicone •  \"Go For Good\" responsible selection •  This STANDARD 100 certified product by OEKO-TEX® - certificate no. CQ 1102/4 IFTH - follows a certified and controlled manufacturing process which is respectful of your skin. The STANDARD 100 by OEKO-TEX® is the first label that meets the needs of consumers in terms of human ecology. It guarantees the absence of harmful substances or those potentially presenting a risk to health.Fabric content & care advice •  69% cotton, 28% polyamide, 3% elastane •  Machine washable at 30°C •  Do not tumble dry