Angel 18 Inch Unicycle Cycling in & Out Door Chrome Colored with Skidproof Tire Yellow & Green 18" wheel (18" x 1.75" Tire)*Color: Yellow and Green Leakage Protection Butyl tire, No second Inflation for 3 Months Great for both Novices and Professionals, Men and Women With Unicycle Stand for Easy Storage,Rather Room Saving Rational designed according to somatology and movement features