Wish your grrr-eat son a brilliant 13th birthday, with this funny bear-themed card, from Hallmark This product is made using material from well-managed, FSC-certified forests and other controlled sources Features a fold-out, die-cut 3D design; comes complete with a co-ordinating, Pale Turquoise envelope Message Inside Reads: Can't believe you're a teenager already! Happy 13th Birthday Measures: 22.8 cm by 15.9 cm; Within Standard UK 'Letter' Size Limits