Buggy recommended minimum age new born pushchair weight 64 kg backrest multiple harness system 5 point safety harness slider not adjustable handlebar height 104 cm wheel settings swivelling lockable wheel type solid rubber tyres number of wheels 4 footrest adjustable dimensions 50 x 77 x 104 cm dimensions folded 27 x 29 x 101 cm included in delivery canopy rain cover shopping bag application city