The Nimbus 2 Sport Reflect tire features an updated tread and compound that rolls even faster and has more grip than ever before. It comes in many widths to accommodate different bikes riding styles and comfort levels so it's the perfect choice for riding on any road or bike path. And with BlackBelt flat protection and reflective accents that increase your visibility to motorists in low-light conditions you get an added dose of that good ol' peace of mind. Casing: 60 TPI Bead: Wire Compound: 60a Flat Protection: BlackBelt 700 x 45mm psi 35-65