Yesterday's Vinyl - Paliktņu komplekts, veidots no vecām skaņuplatēm (9gb) (Coaster set made from old vinyl (9gb))

Because the coasters are made of vinyl they're sensitive to high temperatures. When vinyl is exposed to temperatures above 30°C, it can deform.

(The coasters do not have a protective coating, as this is harming the environment. Therefore the coasters can cause ink stains and are not resistant to moisture.)