This product is urethane based, so urethane pigments may adhere to it.
Shrinkage may occur with deterioration. Please check and replace it regularly.
There may be slight differences in the measurements.

From the Manufacturer

Hikari Memory Foam Urethane Black

Soundproofing, Vibration Proof, Operating Temperature: 32 - 140°F (0 - 60°C), Thickness 1.2 inches (30 mm), Width 11.8 inches (300 mm), Depth 11.8 inches (30