Combi pushchair recommended minimum age new born pushchair weight 113 kg reversible seat carrycots carrycot pushchair seat backrest 3 positions harness system 5 point safety harness slider adjustable handlebar height 92 100 cm series silver cross surf 2 wheel settings swivelling lockable wheel type solid rubber tyres number of wheels 4 safety bar with bumper bar footrest adjustable dimensions 98 x 58 x 100 cm dimensions folded 71 x 58 x 28 cm