Twin pushchair tandem pushchair twin pram recommended minimum age 6 months pushchair weight 148 kg backrest multiple harness system 5 point safety harness slider adjustable handlebar height 76 110 cm wheel settings swivelling lockable wheel type pneumatic tyres wheel diameter rear 22 cm wheel diameter front 22 cm number of wheels 4 footrest adjustable dimensions 112 x 75 x 76 110 cm dimensions folded 79 x 75 x 32 cm colour black includ