Material: ABS Color: Transparent Ink Layer 1: Fixed layout (83keys) Layer 2/3: Stores up to 105 1U keycaps, supports 2 ISO Enter keys and 2U squares Compatibility: Cherry profile, KAT profile, DSA profile, OEM profile, NP/PG/DA profile Not compatibility: PGA/ SA profile Dimensions: 30.5 X 15X1.4 cm (each layer)