Common throw pillow shapes include:
• Square: Versatile and standard (e.g., 18x18 inches).
• Rectangular: Often used for lumbar support (e.g., 12x18 inches).
• Bolster: Cylindrical in shape, varying lengths.
• Round: Circular pillows (e.g., 16 inches in diameter).
• Floor: Large and square or rectangular for floor seating.