ZAMST Neck Ice Bag, Cools Neck, Heat Relief, Golf, Tennis, and Everyday Life, One Size Fits All, 387000

[Cools the entire neck area with the cooling power of ice over a wide area] [Cools the neck area by -20°C compared to when not in use] The cooling power of ice cools the entire neck area, where large blood vessels pass, over a wide area. [Maintains a cool temperature (33°C) for approximately 150 minutes in an environment simulating midsummer's outdoor temperature (37°C)] The cooling power of ice maintains a cool temperature for a long time. [Hands-free comfort] Cools hands-free even when hydrating or resting. [Wide mouth for easy ice filling] The inner diameter of the mouth is 54mm, so it can easily fit standard household ice (approximately 30mm). [Easy to carry] Folds up for compact portability. [One-size-fits-all design] Suitable for both adults and children. Cools the entire neck area with the cooling power of ice [Cools the neck area by -20°C compared to when not in use] The cooling power of ice cools the entire neck area, where large blood vessels pass, over a wide area. [Maintains coldness (33°C) for approximately 150 minutes in an environment simulating midsummer outdoor temperatures (37°C)] The cooling power of ice maintains coldness for long periods of time. [Hands-free comfort] Cool hands-free while hydrating or resting. The inner diameter of the opening is 54mm, so it can easily accommodate standard household ice (approximately 30mm). [Easy to carry] Its foldable design makes it compact and easy to carry. Its one-size-fits-all design makes it suitable for both adults and children.