Ideal for those in cool to cold water conditions like gold divers, divers, surfers, kayakers, swimmers, etc

Designed to fit under a wetsuit, or jacket, and maintain your core temperature in cold water or weather. This vest makes a really significant difference to the time you can stay immersed or active in cold water.

Used only twice, so it's in mint condition. Medium size, but stretchy enough to fit someone a ‘normal large’ size. Cost US$560 equivalent to NZ$870.

The Thermalution Heated Undervest is the world’s best battery powered vest, designed to keep you toasty warm, even in the coldest conditions.

Powered by two 7.4 volt Lithium Polymer batteries and worn under your wetsuit, drysuit, or even winter jacket, whether you are in the water or on dry land hunting, fishing, or snowboarding, this suit will give you confidence to do what you're passionate about on cold days.

See: http://www.thermalution.com for more info.