Ice Pack, Ice Bag, Double Structure, Vacuum Insulation, Cold and Hot Retention - Vacuum insulation layer between silicone and stainless steel

Color: Blue

Summer Heat Relief x Double-Walled Vacuum Insulation
Unlike the common non-woven fabric types, this neck cooler is made of high-quality stainless steel. It boasts a sophisticated appearance like a thermos, while housing a soft silicone stick inside. The space between the silicone and stainless steel is a vacuum-insulated layer, so even if you fill it with ice water, cold water, or ice, the exterior will resist condensation, eliminating worries about wetting the contents of your bag.

Keeps Cold/Hot for 12 Hours x Usable All Year Round
The double-walled structure effectively maintains temperature. It achieves a 12-hour duration for both cooling and warming.
In summer, use it as a cooling neck cooler, and in winter, fill the internal silicone stick (heat resistant up to 100°C) with hot water to use it as a hand warmer or to warm your feet. Since it can be used regardless of the season, it's a highly cost-effective item.

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