Choosing the right size throw pillow depends on the size of your couch and the look you wish to achieve. Generally, for a standard sofa, 18x18 inch or 20x20 inch pillows provide ample support and aesthetics. For larger furniture, consider 24x24 inch pillows for a fuller, more luxurious appearance. Remember, it's all about balance — our designs cater to a versatile range of options to help you mix, match, and find the perfect fit.