Technical Specification Folded size: 67cm x 30cm x 16cm Unfolded size: 100cm x 70cm x 43cm Weight: 5.6kg / 12.6 lbs Dual Chain ratios: 14:8 and 35:9 Max. weight tolerance: 85kgs / 13st 5lbs Max. braking force: complies with BS1602 Part 1:1992 Polymer Composite: 30% GF PA66 Aluminium: heat treated 6061T6 Tyre Size: 15cm/6’’ diameter x 3.2cm/1 ¼” Tyre Valve type: Shraeder Pneumatic tyre pressure: 90psi Max saddle height: 90 cm Min saddle height: 82cm