A king duvet cover from Secret Linen Store measures a generous 225cm x 220cm. That’s plenty big enough to fit a UK king-size duvet and still leaves enough fabric for dramatic morning stretches.Not quite sure which size your bed actually is? (You’re not alone.) Pop over to our guide for all the details.Bed Linen Size Guide

Our duvet covers are sold separately, so you can build your perfect bedding set your way: mix, match, or go full coordination mode. But if it’s matching pillowcases you’re after, we’ve got loads of lovely options to choose from in each range.You’ll find standard (50 x 75cm), large square (65 x 65cm), and super king pillowcases in many of our collections.Shop our full pillowcase range

We use only the finest cottons and linens in our bedding. Our king-size duvet covers come in:100% Cotton – breathable, soft and brilliantly easy to care for.100% Linen – gloriously lived-in, ultra-breathable and gets softer with every wash.Cotton/Linen Blend – the best of both worlds (yes please).If you're not sure which one’s for you, our Cotton vs Linen blog breaks it all down, fluff-free.Shop our full bedding range