Tandem pushchair twin pushchair recommended minimum age new born pushchair weight 134 kg harness system 5 point safety harness slider not adjustable handlebar height 108 cm series chicco echo twin wheel settings swivelling lockable wheel type solid rubber tyres number of wheels 6 footrest adjustable dimensions 82 x 78 x 108 cm dimensions folded 31 x 26 x 105 cm included in delivery canopy rain cover shopping bag