Backpack

Simply attach it to your backpack for a comfortable back.

Can be easily used repeatedly with a refrigerator, freezer, or cold water.

I bought this remembering last year's extreme heat, but last month, even though it wasn't hot, for some reason the shoulder strap area of my backpack caused a rash from my neck to my shoulders. The dermatologist told me, You might want to stop using your backpack this summer (crying).
So I am listing it for sale.

Also, I have indoor pets in my home, so please refrain from purchasing if you are concerned.

Thank you for looking.