It is impossible to avoid compression. After all, you are sleeping on your pillow, and that means you are compressing it. But it is important to understand how feather pillows and down pillows respond to compression, or being compressed, over time. In fact, even 600, 700 and 800 fill power down clusters respond differently over time when compressed. The larger the down cluster the higher the quality and more resilient it will be to compression. Larger down clusters will remain supportive and resilient longer than a 700 fill power or 600 fill power down cluster. They will respond more favorably to being fluffed either by hand or fluffed using the dryer. When it comes to compression products, items that you sleep 'on' like; pillows, feather beds or down mattress toppers the higher the fill power the more durable it is and the longer it will last.