For the Koolin' Klothz, machine wash or hand wash. Use a small amount of soap. They are like a sponge so be sure to rinse well. Just make sure there are no bubbles coming out of them after you wash them. Fold them into the shape you would like and let them dry.
For lingering smells you can use Apple Cider Vinegar in the rinse.
When you need them, just get them wet (hot or cold water), wave them in the air and you are ready to go. You can also use Koolin' Klothz for drying purposes too.
When used in a work environment, Koolin' Klothz is the superior product 99% of the time because of it's weight, it's ease of use, and its ability to stay cold for longer periods of time.
The gel or beaded neckband needs to be soaked in cool water for 15-45 minutes before use. They swell with the water and are heavy around the neck. To recharge them, you have to soak them back in cold water, or put them in the ice chest, refrigerator or freezer. They sometimes will leak out onto your skin. You cannot wash them in the washing machine to clean them. When you use soap to wash them, they absorb the soap. They are disposable after just a few uses if for that long. Then they promote waste by going back to our land fills.
Koolin' Klothz however can be used with hot or cold water. They cool within one minute. They are absorbent to keep sweat out of the eyes. They are washable and durable. They are lighter weight and dry with hardly any weight to them at all. Finally, they last for years - so you don't have to keep buying your employees new ones.