It can be, but it depends on your own personal preferences and the model you choose to buy. Comfort is always a subjective issue and everyone has their own idea about what is really comfortable or not. In the case of wedge pillows, if you invest in a good quality one, it can be very comfortable to sleep on. However, as with anything in life, it may require a bit of an ‘adaptation period’ where you need to get used to the feel and shape of the pillow before truly starting to find it comfortable.