Sport buggy recommended minimum age new born pushchair weight 138 kg reversible seat harness system 5 point safety harness slider adjustable wheel settings swivelling lockable wheel type eva tyres wheel diameter rear 25 cm wheel diameter front 18 cm number of wheels 4 safety bar with bumper bar footrest adjustable dimensions 106 x 98 x 61 cm dimensions folded 89 x 56 x 44 cm colour brown included in delivery canopy shopping bag bumper bar