Instructables

Step 6: How to use.

Soak your neck cooler in water for 30 minutes to activate the crystals. After the first 10-15 minutes, smoosh the crystals around to evenly distribute them in each pocket, then soak for the remaining time. Once it has expanded, lightly squeegee the excess water off the outside with your hand if you don't want it to drip on you too much.

Tie around you neck (or your dog's neck) and enjoy the cool, evaporative effect. It should keep you cool for 3-5 hours depending on the temperature outside. To regenerate it's cooling effect, simply soak it in cool water for a few minutes (1-3 minutes should do) and replace around your neck.

Your cooler can also be a heating pad. Soak in water as for cooling, then pop it in the microwave for 30 seconds!

Care: When you want to store the cooler, just let it sit out on a counter to dry completely and it will return to it's flat state. Hand wash in mild soap.

And for safety's sake, always wear sunscreen and keep hydrate when you are in the sun!
 
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can you freeze it instead
Thank you so much! You instructions are very easy to understand and your pictures are great!