Sport buggy recommended minimum age 6 months pushchair weight 89 kg reversible seat frame material aluminium carrycot pushchair seat backrest multiple brakes locking brake harness system 5 point safety harness slider adjustable wheel settings swivelling lockable wheel type air chamber wheels number of wheels 4 max load 15 kg safety bar removable footrest adjustable dimensions 80100 x 59 x 92112 cm dimensions folded 63 x 59 x 33 cm include