Beautiful bedding is one thing. Making sure it actually fits your bed is another. From pocket depth to duvet overhang, this bedding size guide covers everything you need to know to get it right the first time.
You have found the perfect set. The fabric feels exceptional, the colour is exactly right, and you can already picture how the bed will look. Then it arrives, and something is off. The fitted sheet pops off the corners overnight. The duvet barely reaches the sides of the mattress. The duvet cover has limp, empty edges that no amount of smoothing will fix. Sound familiar? These are the most common frustrations in bedding, and they almost always come down to the same overlooked detail: assuming that a size label is all you need.
Once you understand a few key principles about bedding sizes, getting it right is genuinely straightforward.
Start by Measuring Your Mattress
Before you look at a single product, reach for a tape measure. The only numbers that truly matter are the ones that come from your actual mattress, not the label on your bed frame.
You need three measurements: width, length, and height. Height is where most people get caught out. A standard mattress used to sit between nine and twelve inches tall, and most bedding sizes were designed around that. Today, memory foam, hybrid constructions, pillow-top finishes, and mattress toppers have pushed that number considerably higher. Every extra inch affects how your bedding fits. Write all three numbers down before purchasing any product.
Pocket Depth Matters
Of all the pieces, the fitted sheet demands the most precision. Bed sheet sizes show the surface dimensions, but whether the sheet actually stays on your mattress through the night comes down to something most shoppers never think to check: pocket depth.
Standard fitted sheet sizes are built for mattresses up to around twelve inches. For anything taller, especially with a topper added, you will need deep-pocket sheets designed for taller mattresses.
This is also where queen and king-size bed dimensions can quietly mislead you. Both names refer to the surface width and length, but neither accounts for your mattress height. A queen sheet from a Canadian brand and one from a Portuguese or Italian maker can have very different pocket depths. Always check the specific product measurements, not the label alone.
Size Up Your Duvet
Here is something that surprises most people, and that every duvet size guide will confirm: your duvet is not supposed to match your mattress size. It's supposed to be larger.
A duvet needs to drape generously over the sides of the bed. How much overhang you get depends directly on your mattress height. A deep mattress uses up a significant portion of the duvet's width just covering the sides, leaving less to drape over the edges. For thicker mattresses, sizing up is often the wisest choice.
This is exactly the approach taken in most luxury hotels. The duvet is proportioned to the bed rather than simply matched to it. The result is an effortless, full drape that makes a well-made room feel polished on every side.
The Right Duvet Cover Size?
Unlike the duvet itself, the right duvet cover size is determined by the insert, not the mattress. Your duvet cover should match your insert, or be ever so slightly smaller. A cover that is fractionally smaller creates a loftier, fuller appearance because the insert presses gently against the fabric from inside. This is what gives a well-made bed that cloud-like finish that feels considered rather than flat.
European Sizing
Many of the collections we carry come from exceptional brands in Portugal, Italy, and across Europe. The craftsmanship is extraordinary, but European bedding follows its own sizing conventions that do not always translate directly to Canadian standards.
A Made in Portugal duvet cover may be measured in centimetres. What one tradition calls a "double" may not match a Canadian "queen." A fitted sheet sized for a European mattress may have a pocket depth that does not account for the deeper profiles common in Canadian homes. Always compare the specific product measurements against your own mattress numbers. When in doubt, our team is always happy to guide you.
Follow the Golden Rule
Bedding sizes are not fully standardised. Bed dimensions vary between brands. Pocket depths are not always listed on packaging. Duvet cover size does not automatically follow mattress size.
The reward for getting it right, however, is felt every single night. Sheets that stay in place, a duvet that drapes the way it should, and a cover that looks full and polished from the very first morning.
So before your next purchase, grab that tape measure. It's the smallest step that makes the biggest difference. For personalized guidance on choosing the right bedding for your bed, visit one of our stores. Schedule a consultation, and our team will walk you through the best options for your home.