I've been using a few years and so good!  It won't get flat and washable its case.
 
A strategically placed accent can bring the whole room to life, and this pillow is just what you need to do that. What's more, the soft, machine-washable case with the shape-retaining insert is a joy to have long afternoon naps on.

• 100% polyester case and insert
• Fabric weight: 6.49–7.37 oz./yd.² (220–250 g/m²)
• Hidden zipper
• Machine-washable case
• Shape-retaining polyester insert included (handwash only)
• Blank product components in the US sourced from China and Mexico
• Blank product components in the EU sourced from China and Poland