See photo's for approximate sizes and colours. These socks feel like cotton but I am not 100% sure of blend as the writing on the box is in Chinese.
WB SOCKS 5 pairs of Plain Baby Socks - Roll Top Socks, Blue, 0-6 Months
5 pairs of Plain Baby Socks - Roll Top Socks
LATRAT 5 Pairs of Non-Slip Socks for Baby Girl Boy, Warm Socks, Children's Non-Slip Socks, Baby Socks (0-1 Years), 0-12 Months, 24 Months
5 Pairs Of Comfortable Kids Socks Breathable Socks Baby Non- Socks