The 25 x 1 in. (25-559) Schwalbe Marathon Plus Evolution Wheelchair Tire features Smartguard™, a puncture resistant layer behind the tread helping to prevent flat tires
Schwalbe Marathon Plus Evolution 24, 25, 26 x 1 (25-540, 559, 590)
Schwalbe RightRun Wheelchair Tires - 25 x 1 (145 psi)
26 x 1in. (25-590) Schwalbe Marathon Plus Evolution Wheelchair Tire
Schwalbe Marathon Plus Wheelchair Tires (24 x 1 (25-540)) : Sports & Outdoors
Schwalbe Marathon Plus 25 x 1 (25-559) (Pair) Wheelchair Tire
26 x 1in. (25-590) Schwalbe Marathon Plus Evolution Wheelchair Tire
Schwalbe Rightrun K-Guard 26x7/8 Wheelchair Tire
Schwalbe Marathon Plus Evolution 24, 25, 26 x 1 (25-540, 559, 590)
SmartGuard is a “Flat-less” tire technology, Non-Marking
Schwalbe Marathon Plus Wheelchair Tires (25 x 1 (25-559))