Everytime I go hiking...I have these crazy invention ideas pop into my head. This was one, and I also thought about some type of removable boot sole that could be clipped on/off the bottom of trail runners, so when hiking in rocky areas (PA for instance) you could have more support and foot protection from sharp edges/rocks, but then remove them when not needed, and still have the blister-forgiving/quick drying fit of a trailrunner. I thought you could have them attach like the Step-In Snowboarding Bindings (see pic)
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