One manner to achieve this would be conduction of solar energy that was radiated onto it. An example would be a black canvas bag full of water heating in the sun.
Wool cotton
If the fabric color is dark then it absorb heat from the sun and the fabric's temperature will rise.
Cotton And Wool
Black does not reflect any colors of light and therefore absorbs them all. So, black fabric absorbs the most heat. Recently, there has been production of the "darkest" substance ever made. It consists of nanotubules built from carbon60 molecules, or buckminster fullerenes. This indicates these trap photons in the tunnels of these tubules. So a tighter knit, thicker, and higher thread count, black fabric would be the most absorbent.
There is more than one way to heat water, so I would not apply this to all situations, but in general, when you heat water you create convection currents which cause the hotter water to mix in with the colder water.
Water retains heat because of the tides
it is a clay that absorbs the heat from the water and provides lasting heat for the treatment for the patient.
Wool is one of the best fabric for retaining heat.
It is not a heat conductor.
If the fabric color is dark then it absorb heat from the sun and the fabric's temperature will rise.
Probably light fabric, because it reflects more heat than dark fabric.
Black.
wear it!
Cotton And Wool
Please let me kow if there is anywhere to buy water polo fabric
Nylon fabric.
To find heat exchanging designs, one can simply go to a furniture store or a fabric store. These two stores will most likely carry the fabric that is heat exchanging.
Wet Fabric or diving suit,