Airflo Fluorocarbon Tippet is their go-to everyday fluoro — 50 meters of 100% fluorocarbon with a low refractive index that makes it near-invisible in the water column and enough knot strength to tie confidently in the field without blow-outs at the clinch or surgeon's knot. It sinks fast, handles the abrasion of rocky riverbeds without degrading as quickly as mono, and sits at a price point that makes it the practical spool on your lanyard for everyday nymphing and streamer fishing rather than the one you're rationing. Where the Premium Fluorocarbon is built for demanding conditions and critical presentations, this is the workhorse for everything else.