Here's what I've got. It's light and flexible, but it doesn't stay cold very long. I'll usually add a towel or something on top to insulate it. I may just get a second one to alternate p one on my head while the other is in the freezer. It's very nice to wear home from botox appts,too https://www.amazon.com/dp/B00067E3WI?ref=ppx_pop_mob_ap_share