Supplied flat and rolled. Puffs right after you let him sit and air. I let it sit for several hours. No odor or lumps. unconfirmed experience; My headache disappeared within 2 days after using it for 4 days. However, I'm not sure if this is the cause, correlated or a coincidence. I also pulled my jaw/neck straight back after seeing a physiotherapist's advice on YouTube during the same period (I had this recent bout of mild headache for 2 weeks which prompted me to get this MRI/MRA pillow and look at the X-rays and buy no problems) I sleep on my side and it suits me. I'm a bodybuilder and typical neck pain can cause headaches. In any case, I didn't have to wake up with shoulder and neck pain like I used to. I'll let you know if I find anything useful to add after using this pillow for a long time.
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