Winter Clothing
Paddling in Cold Weather
There are three rules to remember when dressing for cold weather:
No cotton. It soaks up water and holds it against your skin, leaving it worthless as an insulator and heavy as a layer. A worthless, worthless fabric in the water.
Layers help trap heat and fend off water. Remember "wick, warmth, and weather" as you arrange your layers  light wicking fabrics first, then warm insulating sweaters or fleeces, and finally an waterproof outer layer to protect you from the elements.
No cotton; seriously.