And 20 off the Terapin system. I paid full price for a Sweet Roll and have used it for many days of all kinds of riding with all sorts of cargo in and on it. It’s a really well conceived and executed design, and it seems burly enough for many, many big jobs. Amazingly light, too. I have another front roll and harness system, which allows quick separation of the dry bag. Can be nice in sketchy weather bivying or if using the roll to hang food. The SR is more a burly dry bag with attachment points incorporated. I hung my food in a small backpack and left the roll attached – I’d use that system again for most anything. For 70 bucks it’s a deal. No affiliation with Revelate.