16" Wheel Skid Proof Tread Pattern Unicycle W Stand Uni-Cycle Bike Cycling Red Frame: Excellent Manganese Steel, Standard Frame of Unicycle Inner Tire: Leakage Protection Butyl tire, No second Inflation for 3 Months Outer Tire: Excelletn Skid Proof Mountain Tire Crank arms:WHEEL TOP Crank, International Quality Outer Tire: Excelletn Skid Proof Mountain Tire