How firm is the pillow? Simba - Odyssey January 23, 2018 13:45 Follow While firmness is a tricky one to categorise as it's down to the individual, we would describe this pillow as medium-firm. Related articles What is the memory foam pillow made of? Can I return my Simba bedding, furniture or accessories? How do I use my Simba Mattress Protector? What size is the pillow and will my pillowcase fit? What are the pillows made of?