Sport buggy recommended minimum age 6 months pushchair weight 65 kg frame material aluminium backrest continuously adjustable brakes locking brake canopy removable viewing window harness system 5 point safety harness handlebar height 99 cm folding mechanism one hand fold number of wheels 4 max load 15 kg footrest 2 way adjustable dimensions 91 x 45 x 99 cm dimensions folded 56 x 24 x 45 cm lying area 83 x 33 cm