I bought this from BMS years ago and it served me well until a couple of years ago when it was retired to the shelf and my Adkins took over. The idea was to keep this set up for bottles but it was never needed again.
I've just tested it and it's working perfectly. I can't guarantee the life of the blanket but temp seems consistent around it right now.
Bargain at £30 + postage at cost to clear some much needed shelf space! I have a similar model also for sale, see other ad.