I’m using Momentum as the bottom layer of a “summer coupler” project. (This connects two pads together and zips to a Western Mountaineering Mitylite as a top quilt.) I don’t see a need for DWR in this application; I’d prefer as much breathability as possible.
Is there an easy way to wash out the Momentum DWR? I’ve run the fabric through the wash with some mild soap a couple times (after searing the edges) and to its credit, the DWR really is Durable! Water still beads up on the fabric.