Aaron has used the Sea to Summit Event compression dry sack on multiple expeditions around the world to protect his sleeping bags. He talks about his experience with them and why you might consider using them for your trips where protecting your sleeping bag matters.
Get the Sea to Summit Event Compression Dry Sack at Amazon here: https://amzn.to/2GvbYwR
Other bags Aaron has used:
Get the Sea to Summit Waterproof bags at Amazon here: https://amzn.to/2Ynf2Te
Get the Sea to Summit Sil-Nylon bags at Amazon here: https://amzn.to/2DAxAqZ
Get Adventure Expedition One on Amazon: https://amzn.to/2tIASTG