Sock blockers. They are made of lightweight but durable Plexi with a thickness of 3 mm.

It is ideal for drying socks so that they do not deform. Wet stretching will allow you to give them the desired shape.

How to block.
1) Wash or soak the socks, then gently squeeze them.
2) Put the socks on the blockers, giving them the desired shape.
3) Let them dry. The shape of the blockers includes a hanger, so you can hang them for that time.

Sizes:
S (shoe size 35-37, insole length about 22 cm).
M (shoe size 37-39, insole length about 25 cm)
L (shoe size 39-41, insole length about 27 cm)

The price is for a set of blockers, or 2 pieces.