Color(s)

• Black (3)
• Gray/Black (1)

Surface Features

• Non-Skid (1)
• Nonslip (1)
• Surface Bumps (1)

Adjustability

• Angle (1)
• Position Lock (1)
• Tilt (1)

Material(s)

• Memory Foam (1)
• Plastic (2)

Width

• 18" (2)
• 20.5" (1)
• 21.5" (1)

Height

• 3.5" to 21.5" (1)
• 3.5" to 5" (1)
• 4.25" (1)
• 4.3" (1)

Depth

• 13.4" (1)
• 14" (2)
• 14.5" (1)