From The Farm Neck Cooling Ring, Reusable Neck Cooler for Summer Neck Support  (Multicolor)

This reusable neck cooling ring provides effective heat relief on warm days. Made from flexible, lightweight material, it comfortably wraps around the neck thanks to its adjustable design. The internal cooling tube works below 59°F/15°C to draw heat away from the body through evaporation. Just fill it with water and squeeze—the liquid will circulate and cool the skin for hours of refreshing relief from the sun or indoor heat. Its compact size makes it convenient to carry anywhere. Whether you need a break from the outdoor heat or your office could use some cooling down, this affordable and reusable neck cooler is worth keeping on hand all summer long.