I leave mine on all time. I wrote to the manufacturer about whether heat build up would be a problem with it on all the time and their reply is similar to what you will find written on their website in that they tested it for 8 - 10 hours work each day over several months, leaving it on all the time with no problems. I actually like the feel of typing with it on. Wendy On Tuesday, Jun 10, 2003, at 10:34 Asia/Muscat, Ron nie wrote: > hi. question about iskin > can i leave iskin on when i close the lids. > thank. > Wendy Austin & Thomas Oswin Coastal Road, Pomponette Mauritius Island Tel/ans/fax (230) 6257399 Mobile (230) 2560182