AW 18" Inch Wheel Unicycle Leakproof Butyl Tire Wheel Cycling Outdoor Sports Fitness Exercise Health 18" wheel (18" x 2.125" Tire); Color: Silver Weight limit: 132Lbs, fits to applicable height from 53" to 65" Outer Tire: Excelletn Skid Proof Mountain Tire; Inner Tire: Leakage Protection Butyl tire, No second Inflation for 3 Months Rational designed according to somatology and movement features Great for both Novices and Professionals, Men and Women