The Impact Athmos 20" is Impact's entry level Trials and Street Unicycle. A great lightweight beginner trials unicycle from Impact, with the ISIS Hub and Cranks.
Saddle: Impact Athmos Saddle - Black
Seatpost: Impact 'Standard' Seatpost Black 300mm - (25.4)
Seatpost clamp: Impact '1 Bolt' Seatpost Clamp - White (28.6mm)
Frame: 20" Impact Athmos Frame - Black (42mm) Wheel-size: 19"
Tyre: Nimbus 'Cyko-Lite' 20" x 2.5" Tyre (Un-branded)
Rim: Impact Athmos Rim - 36 Hole, White (47mm)
Spokes: 36, 14g Stainless Steel - Black
Hub: Impact CrMO ISIS Hub - 36 Hole, White
Cranks: Alumimium ISIS Cranks - Black 140mm
Pedals: Large platform plastic-bodied pedals, 9/16" thread.
Recommended leg length sizes for unicycle:
Standard seatpost: Minimum - 74cm (29.1"), Maximum - 86.5cm (34.1")
Cutdown seatpost: Minimum - 62.5cm (24.6")
These sizes are measured from crotch to floor wearing shoes.