We sleep with therma rest mats and our sleeping bags constantly slide because the camp site we stay at is always slightly on an incline. How can we stop from sliding all night long?
Many rectangle bags have a sleeve for the pad to fit into so they stay together. Big Agnus makes a mummy combo the same way. I've also heard of people who stick velcro ties on both units so they can be tied together. It sure is a nuisance when it happens, isn't it?
Apply a dozen or more small dots of clear silicon to your mattress, this will stop the sliding (you can always add a few more if needed, but unlikely). An old trick I've used this for years, works great.
