Buggy recommended minimum age new born pushchair weight 13 kg reversible seat backrest 3 positions harness system 5 point safety harness slider adjustable series phil teds promenade wheel settings swivelling lockable wheel type eva tyres number of wheels 4 safety bar with bumper bar footrest adjustable dimensions folded 106 x 64 x 34 cm colour blue included in delivery canopy shopping bag bumper bar application city