I recently purchased the Galaxy HD extra firm mattress from National Mattress, and I couldn't be happier with my decision! From the moment I laid down on it, I knew I was in for a treat. The level of firmness is just perfect for me – providing excellent support for my back while still being incredibly comfortable. Not only does the Galaxy HD mattress offer superb support, but the quality of materials used is top-notch. It feels durable and well-made, ensuring that it will stand the test of time. Plus, the HD feature truly elevates the experience, offering an extra layer of comfort that makes every night's sleep feel like a luxurious experience. The customer service from National Mattress was also exceptional. They were helpful throughout the entire purchasing process, providing valuable insights and ensuring that I found the perfect mattress for my needs. Overall, I can confidently say that the Galaxy HD extra firm mattress has exceeded all of my expectations. It has transformed my sleeping experience for the better, and I wake up feeling refreshed and rejuvenated every morning. If you're in the market for a high-quality, extra-firm mattress, look no further than the Galaxy HD from National Mattress. You won't be disappointed.