It’s literal name is the purple mattress that feels medium/firm. Source: 11 months ago

Many of the biggest bed in a box companies do use a higher quality foam than the brick and mortar brands. You can think what you want about Purple's grid material, but the specs of their mattresses are listed on their website and they do in fact use high quality foam: a 2.0lb support layer and a 1.8lb transition layer on their cheapest model. Source: over 2 years ago

Purple "Purple Mattress" (don't know much about it but seemed promising). Source: over 2 years ago

🛒: https://purple.com/mattresses/purple-bed. Source: almost 3 years ago

Hey, I have a queen size Purple mattress (https://purple.com/mattresses/purple-bed) available, new and still in original packaging. It’ll be available for pickup on the ground level of our apartment, and I can help you load it into a car. I’m located right by the Astoria Blvd N/W stop. Source: almost 3 years ago

Check out https://sleepio.com. They offer a variety of strategies to help you correct your sleep over a 6 week period. It helped me increase my sleep and create better sleeping habits. Unfortunately, it does seem limited a bit by regions; your mileage may vary. - Source: Hacker News / over 2 years ago

A bit of context: the website enables users to practice Cognitive Behavioural Therapy for insomnia (CBT-i). It is primarily based on admittedly a much better website sleepio.com which is geo-restricted, so I decided to create an open version and practice web development in the process. Source: almost 3 years ago

Whilst waiting for referral you could also try sleepio.com. Source: about 3 years ago