Yes, you need. If you want to keep up to date with the latest information of Mammoth Sport Mattress and obtain member benefits, you only need to register as a member in mammothsportmattress.co.uk. The Mammoth Sport Mattress registration process is really simple: you can visit the mammothsportmattress.co.uk homepage, at the bottom is the registration entrance, follow the relevant prompts to complete the registration.