The garments in this collection make such a cute combo. The "grandad" cardigan is the best as it has a 'mature' style which always makes the small people look even cuter (no everyone, don't panic, this is not being written by Eleanor).
Knitted in King Cole Big Value Baby Chunky, a machine washable, supersoft acrylic yarn. You might also want to have a looksy at the King Cole Drifter chunky if you fancy a stronger variegated yarn (yes it is still soft and machine washable)
5mm and 5.5mm needles are required.