We pair khullu with merino wool.
Merino wool is the Swiss Army Knife of the natural fiber world. It's world-famous for its excellent insulating, sweat-wicking, and odor-resisting properties. Merino wool can absorb 30% of its weight in water and remain dry to touch.
Merino can also be bent and flexed 30,000 times before it's damaged. Merino is a durable fiber that protects against the sun's rays, resists wrinkles and pilling, insulates body heat when it's cold, and transports sweat away in the heat.