Migraine and Headache Relief Cap: Ice Wrap for Tension & Sinus ReliefHeadache Relief Hat Migraine Cap, Wearable Migraine Mask Ice Head Wrap for Tension Headache, Puffy Eyes, Sinus Headache & Stress Relief This is a wearable mask. It's stretchable with double seams lets it fit every face, head & eye. Cap is one size fits all. If you are not comfortable with its size, return it for a full refund. Their ICE cold flexible ice pack cap provides 360 natural cooling while resting comfortably. The product's slip on design