How does ambient temperature affect the hardness of STABILO products?

Due to the expansion of the air with an increase in temperature, you may notice in Stabilo changes in hardness accompanying changes in temperature, hardness (↑ºC cushion softens, ↓ºC cushion hardens) . This change is minimal but noticeable, for example, when a Stabilo product is placed into a heated car. In this situation, you should remove air to harden the cushion and check the hardness when the temperature is lower.