Common options include instant cold packs, reusable hot/cold gel packs, gel‑bead compresses that mold to the body, eye‑specific gel masks, and form‑fitting wearable head caps.
Duration varies by product; many review summaries report a cooling effect of about 1–2 hours, while at least one product description claims a cold period of up to 8 hours.
They can be worn as form‑fitting caps or eye masks, held in place with straps or sleeves, or simply laid over the head/eyes. Some products offer slip‑on, wearable designs for hands‑free use.
Methods vary: instant cold packs activate without freezing; many gel‑bead or compress packs are frozen for cold therapy and can be microwaved for heat. Product listings typically note whether freezer or microwave use is recommended.
Suggested ages in the product details range from '1 Year and Up' and '12 Years and Up' to '18 Years and Up,' and one item is listed as 'All Ages.'
