I use these at the office, where my hands get too cold to type.  These really help and they are cute.  The material is a bit cheap and if your wrists are big they will indent and be a bit uncomfortable at the cuffs.  I found folding the cuffs over onto themselves helped alleviate this discomfort.  I wear them at least once a week and it saves me from having to sit on my hands every hour or so to warm them up to type well.  I would recommend these.