Ihavent mate,but did get a pair of fingerless gloves from rutherfords last year which were sound as a pound,my hands tend to seize up in the cold,i dont relly feel the cold as i work outside in the winter,but me joints just start to struggle a bit especially reeling in,...are these mittens waterproof and would the batteries still work in the wet :s

Not sure whether them are the ones i posted but the thinsulate type ones are waterproof,read this about one of them must make your hands very warm;

Proper use & heating regulating;

The gloves are designed to keep hands warm,but not hot. Engage the heat only after beginning to feel cold. Maximum benefit will be obtained by turning the gloves on and off often. Do not allow the hands to become overheated.

Waterproof;

inner dry is a high-tech waterproof membrane.Sandwiched between the shell material and the lining,the membrane prevents water from penetrating the glove,while allowing moisture in the form of vapor to escape from the hand cavity.

Inner dry keeps the hand dry and comfortable,while maintaining maximum flexibility.