✔️NEW TECHNOLOGY: Our cooling neck ring utilizes a property of the Phase Change Material that allows it to freeze at 28°C and maintain at that temperature as it melts in order to keep you feeling cool in the hottest of environments. ✔️SAFETY FIRST: The materials we use are 100% toxin free and BPA free. The cooling ring is SGS tested to ensure that it is safe for the body, keeping you safe while keeping you cool. ✔️Long-lasting Cooling Tube: Get ready for the hot summer and the innovative materials developed to keep you cool. This gel freezes faster than water and lasts longer!