After about 2 hours in the freezer, Calmcap stays comfortably cold for a typical 15–20 minute session (it depends on your room temperature). For back-to-back sessions, keep a second cap chilling in the freezer.

Not over your eyes: the cap covers them to block out light, so take your glasses off while you rest. If you'd rather keep your glasses on, roll the cap up and wear it like a beanie to cool your head and temples.

Wipe the fabric with a damp cloth and a little mild soap, then let it air dry before putting it back in the freezer. Don't machine wash, soak or wring it.

Yes. Warm it in the microwave in short bursts, checking as you go, and never above 122 °F (50 °C). Always test the temperature on your wrist before wearing it.

Calmcap is one size and made of stretchy Lycra. It fits head circumferences from about 16.5 to 26 in (42–66 cm).

Because Calmcap is a personal-care item worn on the face, we can't accept change-of-mind returns. But if it arrives damaged, defective or in the wrong color, email us a photo within 14 days of delivery and we'll send a free replacement, no need to send it back. If your package gets lost, we'll reship or refund it. See our Refund Policy.

Add any 2 or more Calmcaps to your cart (mix colors if you like) and 15% off is applied automatically. No code needed.

No. Calmcap is a comfort accessory for hot and cold therapy. It's not intended to diagnose, treat, cure, or prevent any disease. Many people simply find cold, darkness and stillness relaxing. Always consult your doctor for persistent or severe headaches.