Understanding that Sealline is differentiating themselves with features, like their QuickClip closure (shown below), it’s also nice just to have a big flap of velcro to throw the bag closed. What I noticed is the “heft” (or lack of it) and when compared to my Timbuk2 bags, I’m concerned that the Sealline isn’t going to last as long or get that Timbuk2 patina.
It’s like a nice sweater that you know if you wash it, it’ll lose it’s shape.