Primo has long been the go-to brand for dependable and price-conscious street tires. How iRoll Sports is excited to offer their new Sentinel HD (High Density) solid model. This solid tire is made to look and feel like a pneumatic tire. lThe fit is great, the look rocks, and if you’re gonna go solid look no further! The superb density of the Primo Sentinel HD tire maximize rolling efficiency and comfort. The high density compound is specially formulated to mimic a properly inflated pneumatic (air tube) tire so the wheel still rolls efficiently and comfortably. The absolute benefit is you never have to worry about pesky flat tires! Sold per tire. Sizes: 24″ (540), 25″ (559), 26″ (590) Colors: Black, Grey, Red, Blue, Pink Puncture Protection: Solid Tire (no tube required) Fits most clincher wheels, including Spinergy