Exped - Ultralite 300 Down Sleeping Bag

G'Day Practical, I've had an Exped Synmat which I recently replaced with an Exped 5R (I haven't used this yet, but it is the successor the Synmat). The Synmat lasted quite a few years and I was very happy with it. Both mats are rectangular rather than tapered so I think you will be less likely to slide off it. I certainly never had any problems, which is why I bought the 5R. Regarding sleeping bags, I have a three season bag (Exped Ultralite 300, \~300 g down) which I can pair with an inner bag (Macpac Snowflake, 130 g down). I used this combination (along with a silk inner sheet) in Nepal up to 4000 m (in accommodation) and was always comfortable. Note, you didn't mention having an inner sheet. If you do not have one, I advise you to get one (silk, not cotton). I think it is worth buying quality products from reputable manufacturers. They will last you a long time and be reliable.