Will echo the Vedavoo, fourth season on my Beast sling. It's absolutely perfect for my minimal approach but is no slouch for space. I also dig the Vedavoo made local, made in the USA, support the little guy scene. They're doing good things for the community.
For longer outings that require more storage or rain protection I supplement with a waterproof lumbar pack (typically my Wingnut Gear pack for mtb riding.) If I lived in a wetter climate I might lean towards one of the waterproof slings.
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