The All-TerrainJust like the best off road adventures balance breathtaking views with muddy trails, sometimes youll need to swap out your metal ring for more flexibility. Cue: this ring. Wear it while tackling tough terrains, hitting the gym, or when you plan a hike but end up relaxing with some snacks in your ride instead. Sizing Recommendation: We recommend ordering your standard size (or size up if you're a half size) in the The All Terrain. Silicone in Black