CoolTime Basic (Blue, Pink, Camo) takes approximately 20 minutes to self-cool in the freezer, and approximately 10 minutes in ice water. Self-cooling begins anywhere below 18°C(64°F), but the lasting duration may vary depending on the environment.

If CoolTime is self-cooled for more than 20 minutes in the freezer, its maximum effective duration is approximately 2 hours, with the actual duration varying based on factors such as environmental temperature, body heat, etc. It is recommended to wrap CoolTime Basic with a wet fabric before use in order to maximize its cooling effect.

Yes! It is fine to keep CoolTime Basic in the freezer when it is used consistently. However, it is not recommended to keep CoolTime Basic in the freezer for a duration longer than 2 weeks. If you anticipate not using CoolTime Basic for an extended period of time, it is recommended to keep it in a cool and dry location, in order to prevent any damage.

Yes, it does. The duration varies depending on baseline body temperature, the self-cooling condition of the product, and environmental factors. If you have a lot of body heat, or are using the product outdoors, it is recommended to consider buying two or more products, and alternating their usage, in order to maximize their cooling effects!

No, it is not leaking or defective. It is a natural phenomenon that occurs when frozen gas is dissolved in a special refrigerant inside the tube, causing the release of air bubbles. However, it does not affect the effectiveness of the product!

Yes, it is. The edge is created when the refrigerant is injected into the tube. After this, a patented Korean sewing technology is applied to smoothly and tightly sew the tube closed, not only to prevent skin irritation, but also to prevent any leaks.

Yes they are! The entire manufacturing process for CoolTime Basic products is strictly regulated in South Korea, and all of the components, including the outer shell fabric, inner refrigerant, and sewing technology are thoroughly inspected to ensure high-quality products. CoolTime is proudly certified by SGS for refrigerant safety, RoHS for harmful substance safety, and MSDS for skin safety.

Additionally, CoolTime Basic products offer optimal cooling temperatures at around 18°C (64°F), where the human body can feel its natural coolest.

Please note that there are numerous Chinese counterfeit products on the market that may cause skin damage or may be potentially hazardous due to the presence of low-quality contents with unverified sources in the refrigerant.

Long exposure to ice packs can actually cause frostbite, which is damage and injury to the skin due to prolonged exposure to cold temperatures. After three years of product research and testing, the special refrigerant inside CoolTime Basic products have been developed to offer the optimal cooling temperature for maximum comfort and safety.