Excellent ordering service. Gloves arrived in next day's post. The fabric is very lightweight. I wore them the next day, but was disappointed as my fingers were just as white and cold as with any other gloves! I've since worn them as inner gloves and they do make a difference then. They are quite short and do not cover the wrist. I know that it is important to have wrists covered, to keep warm. I've yet to find gloves that work for me. I do not take any medication for my Raynaud's - perhaps that might make a difference.
Haven't had chance to test fully as the weather isn't too cold just yet, but I have worn when out cycling in the cool windy weather and they make a big difference to my fingers. I may wear under a thick pair of gloves when it gets really cold as they are thin enough to do so.