Buggy sport buggy recommended minimum age new born pushchair weight 8 kg reversible seat canopy viewing window harness system 5 point safety harness slider adjustable wheel settings swivelling lockable wheel type eva tyres wheel diameter rear 18 cm wheel diameter front 16 cm number of wheels 4 safety bar with bumper bar footrest adjustable dimensions 86 x 51 x 104 cm colour turquoise included in delivery canopy with view window footmuff shop