We buy for snowboarding every year at the beginning of the snow season. I have had adult sizes for 4 years now and have not had to change mine. Children get new ones because of foot growth!
Pros
The socks are made from a premium blend of materials, including merino wool and nylon, for superior warmth, durability and moisture-wicking properties.
Cons
Socks may not be as durable as expected and may wear down slightly after a few uses.