I have this same cap and it's extremely helpful! Feels so good to have ice surrounding my head during a migraine.

I got mine from Amazon! https://www.amazon.com/dp/B07DG2Z1NH/ref=cm_sw_r_cp_awdb_t1_RwcaEbS08QEDG

I got thisice cap https://www.amazon.com/dp/B07DG2Z1NH/ref=cm_sw_r_cp_apa_i_j0X8DbY0XNAKG).

It's currently unavailable but it is a godsend!

I have this one and love it. I use it for the compression/pressure it gives and the dark it provides, the cold makes my migraines worse.

https://www.amazon.com/gp/product/B07DG2Z1NH/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1

One day when it was real bad, it searched Amazon for “ice helmet” an lo and behold :ice helmet

Here's the link to it on Amazon :) https://www.amazon.com/dp/B07DG2Z1NH/ref=cm_sw_r_cp_awdb_t1_RwcaEbS08QEDG