Life Systems Thermal Blanket
A lightweight, compact thermal blanket which, when wrapped around the body, reflects and retains over 90% of radiated body heat in the event of an accident or trauma, or when the weather suddenly turns cold.
What do SKO think? super slim and very light. We carry these in the hydration pouch of our PFD. You can totally forget they are there but work as a signalling device and emergency warm layer wherever you are.