The SS gravel bike tyre features an updated tread pattern consisting of a smoother, diamond pattern centre with more aggressive side lugs. This tread pattern allows the rider to keep the speed up going into corners and maintain control throughout any transition a gravel ride could present. The Gravelking SS incorporates a supple 120 TPI casing with a nylon puncture-resistant belt and Panaracer’s proprietary ZSG (Zero Slip Grip) compound.Panaracer Gravelking Semi Slick TLC Folding Tyre Features:Weights:700×32C black: 320g; 700×32C brown: 330g; 700×35C black: 380g; 700×35C brown: 380g; 700×38C black: 410g; 700×38C brown: 410g; 700×43C black: 480g; 700×43C brown: 480g; 27.5×1.90(650B×48) black: 540g; 27.5×1.90(650B×48) brown: 540gMaximum Pressures:700×32C black: 60psi; 700×32C brown: 60psi; 700×35C black: 60psi; 700×35C brown: 60psi; 700×38C black: 60psi; 700×38C brown: 60psi; 700×43C black: 60psi; 700×43C brown: 60psi; 27.5×1.90(650B×48) black: 50psi; 27.5×1.90(650B×48) brown: 50psiTechnologies:ZSG Natural Compound: This compound has the same low rolling resistance as the premium compound. Its enhanced wear resistance makes it perfect for a long lasting training tire with an excellent ride.Advanced Extra Alpha Cord: AX technology uses extremely narrow cord which is weaved at a super high density into the casing for lightness and flexibility. This increased density improves resistance to cuts and abrasions.Anti-Flat Casing: Anti-puncture reinforcement throughout the tire strengthens resistance to cuts and pinch flats.