Memory foam seal much better than any other mask I've tried over the years. One thing to be mindful of is it fits small. I'm a medium in the silicone masks for resmed but I'd probably be a large with this mask. Medium still works but it's pretty snug
I like these because aside from cleaning gently and thoroughly, their packaging makes it easy to pull a single wipe at a time out. Other brands come in a big roll with several coming out at once too wet.