Gravel Nano is made for speed!an almost uninterrupted raised centre line that rolls effortlessly on hard surfaces, plus numerous outer lugs that provide lateral traction and predictability on the ground. It's just a great jacket. USAGE: Gravel / Cyclocross CONDITIONS: Hardpack / Dirt / Gravel Size Level ETRTO Tubeless Compatibility Casing Weight Compound Min-Max PSI Part Number 700c x 40mm TCS Light/Fast Rolling 40-622 TCS Tubeless Single-ply 60 tpi 530g Dual DNA 30 - 60 W010-0578 700c x 40mm TCS Light/Fast Rolling (tanwall) 40-622 TCS Tubeless Single-ply 60 tpi 497g Dual DNA 30 - 60 W010-0692 700c x 40mm Race Tube-Type 40-622 Inner tube required Single-ply 60 tpi 470g DNA 40 - 70 W010-0524 700c x 40mm Comp Tube-Type 40-622 Inner tube required Single-ply 60 tpi 550g DNA 40 - 70 W010-0523