What size pillow should you get if you have a Cot Bed? Rebecca Leonard April 09, 2019 11:12 Updated Follow If you're making up a cot bed, choose a Junior pillow. Our Junior Pillows measure 40cm x 60cm. Remember that pillows are not recommended for babies. Shop all our pillows. Related articles Which pillows can you wash in a washing machine? What size pillow should you get if you have a Single Bed? Comments 0 comments Please sign in to leave a comment.