Review (1/5): Very Thin- water gets inside.
These are equivalent to plastic bags from a grocery store. Not recommended to trap heat. Very thin. The attached pictures show the difference between the durable ones I've used compared to these.
When using in the shower as a conditioner cap, a pool of water got inside. These are useless unless you double or triple layer them.
It literally fills with water. This cannot be used in the shower or with any liquid product.