Material: Cotton & Acrylic  Style: Casual  Pattern Type: Solid  Fit: Fits true to size, take your normal size  Size in cm:  0-6 months - Length:7-9 (Extra Small)  6-12 months - Length:11-12 (Small)  1-2 years - Length:12-13 (Medium)  2-3 years - Length:13-14 (Large)  Package include:  4 Pairs of Winter Cotton Socks/Set  Tip:  1. Notes: Please allow 2-3 cm differences due to manual measurement. 2. All measurement in cm, please note 1 cm = 0.3937 inch; 1 inch = 2.540 cm.  If you have any questions, please feel free to contact us and we will try our best to solve your problems immediately.