SIZE INFORMATIONPlease refer to our size list to select the right product. socks are ideal for children aged 3-13, XS for ages 3-5, S for ages 6-9 and M for ages 10-13.ADVANCED MANUFACTURING, EXTREME COMFORTAfter scientific calculation, the composition has a high affinity for skin, does not pilling, soft and comfortable, warm and breathable, no odor and easy to clean.GIFT CHOICE: Our socks are of high quality and have a beautiful and lovely look, you have more choices to choose gifts for your children, our products are beautifully packaged, and if your children enjoy the outdoors in winter, our products will be a great gift.MORE RATIONAL DESIGNThe arch-shaped design of the bare part of the foot makes the socks more fit, and the circular elastic design of the sock mouth ensures long-term use without worry, farewell to slipping and deformation, no wrinkle seam technology, thickening of the socks, reduction of vibration and enhancement of wear resistance.WARM TIPWe produce the best socks, provide the best service, and 100% support our products, if you have any questions about product quality use, please contact us and we will replace them for you free of charge.