From the Bog Dog team:
Streamlined for long runs and demanding hikes on rugged terrain, the Spectrum Trail Midweight Crew performance toesock takes trail comfort to the next level. The five-toe design prevents blisters by eliminating skin-on-skin friction, while the Crew height rides high to keep debris out. Arch support enhances total foot utilization on uneven trails and COOLMAX® fibers keep feet dry. Added midweight cushioning delivers the sought-after comfort trail runners rely on.