The cotton cover on this Bliss Cotton Memory Foam Firm Support Pillow is perfect for those who love the natural comfort of a traditional 100% cotton woven cover, with all the benefits of memory foam support. What's more, the cover is zipped, so you can take it off to be washed to keep it clean. With a new and improved soft formulation, this memory foam pillow features air holes that allow air to flow and reduce heat build-up. Memory foam naturally adjusts to the shape of your body. It reacts to the heat the body produces and follows the contours of your head and neck to ensure your spine is aligned as you sleep. This means you can relax into a great night's sleep with this Blissful Cotton Memory Foam Pillow and wake up free from aches and pains. With a deep profile and firm support level, you will benefit greatly from this pillow if you’re a side sleeper, as this shape eases pressure on your shoulders and gently encourages correct spinal alignment and posture. Pillow Size. Snuggledown