The Specialized Storm Control 2 Bliss 650 Bx 2.0 Mountain Bike Tyre is designed for wet & muddy winter conditions. It uses a soft rubber compounds that stick to wet roots & rocks, as well as perfectly-spaced knobs that allow the tyre to clean itself of mud & debris, the Storm Control 2 Bliss Ready makes for a mud-munching tyre. As a 2 Bliss ready tyre you can run the Storm Control either with a standard tube or on a tubeless setup. Casing: 60 TPI for 15% enhanced cut-resistance Bead: Foldable Butyl wrapped bead = 2 Bliss Ready Compound: 60a 650b x 2.0"; psi 25-50; approximate weight 600g