Breeze Sleeping Bag Liner

Yes. It can be washed in a machine with normal supermarket detergent - but avoid fabric softeners which reduce wicking performance. Machine dry on a cool/low setting (no dryer sheets) or air dry

Breeze liners feature COOLMAX fibers that wick moisture away effectively. While this doesn't actively lower temperatures, it prevents you from feeling sweaty and clammy in humid conditions

The liner is impregnated with bio-based amino sugar polymers that absorb and neutralize odors. When the liner is washed, the compounds that cause odor are released, and the polymer is ready for the next use

Yes - any extra layer traps insulating air, and the knitted structure of the Breeze traps more air than woven liners - so it will add some warmth