In the box, the Stokke® Tripp Trapp® Newborn Set™ (0-6 months) measures 51 x 20 x 36 cm. and weighs 2.5 kg. The dimensions of the product itself are as follows: Outer shell: length 50.5 cm / width 35 cm / height 19.5 cm. Inner seat: length "head to toe" 41 cm / max. depth (at centre) 16 cm