Impact Soft (Base / “S”) Standard knee and shin protection Light and comfortable Suitable for fly fishing and streams Summary: entry-level, light/moderate use Impact Soft Competition Higher-grade materials and stitching Inner and outer protection Comfort and durability Summary: frequent fishing on moderate terrain Impact 20.20 Reinforced shells, durable clips and straps Anti-slip surfaces Suitable for rocky terrain and intensive wading Summary: heavy-duty version for demanding conditions Impact Soft Double Competition (Red Stitching) Extra-strong red seams Excellent protection on rocks and brambles High-quality materials Summary: most durable Competition version