The Trigger Sport tire rolls fast on asphalt hard-pack & gravel paths making it ideal for anyone looking to get the most out of a smooth cyclocross or gravel course. It features a solid casing for enhanced comfort & handling through corners while the durable compound makes it smooth rolling & tough enough for the rigors of a cross course. Even better the 38 & 42mm sizes feature our Black Belt flat protection for added piece of mind while youre riding over gravel or rough surfaces. Casing: 60 TPI Bead: Wire Flat Protection: 38 & 42 have Black Belt 700 x 38mm psi 75-100 approximate weight 515g Compound: 60a