I think the subj is a great device. It keeps your helmet clean, makes putting it on easier, and keeps you comfortable whatever the weather. I have Oxford ChillOut Thermal Motorbike/cycle Balaclava, full head with one hole. http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 42ffd3a0df It is OK for temperatures about 10C and below, otherwise it is too hot. It claims to be wind and waterproof which is not far from the truth. IMHO, the main things to look out for when choosing one are: 1. the hole must be big enough to keep clear of your breath, ideally just under your mouth to avoid steaming (mine is too high) 2. the breast and back covers should be long enough to tuck deep under your outer layer (mine's too short at the back) 3. It should be waterrepellent/proof and windproof (mine is excellent) Would be the best to try one on, as always, before you buy, as size matters. Cheers!