Standard sizes don't fit every space. We build mattresses to your exact dimensions — any width, any length, any shape. From RVs and boats to oversized bed frames, Seva crafts it to fit perfectly.
Expert
Craftsmanship
Superior comfort
and durability
Any Shape
or Size
We build mattresses to your exact dimensions
100% Canadian
Made
Proudly made
in Canada
Cool and
Supportive Sleep
Balanced comfort
for a better night's sleep
Whether your space is rectangular, rounded, angled, or completely irregular — we'll build a mattress that fits it exactly.
Rectangular
Classic comfort, sized to fit your bed.
Round
Custom comfort for circular beds.
Corner cut
Shaped to fit around tight corners.
Tapered
A narrower end for spaces that need it.
Wedge
An angled shape for an unconventional space.
A mattress built to your exact specifications means better fit, better sleep, and a longer lifespan.
No more overhangs or gaps between mattress and frame. A custom-cut mattress sits flush in your space for optimal support and a clean, finished look.
Round beds, angled boat berths, curved RV corners, or irregular antique frames — we build mattresses in shapes that off-the-shelf options simply can't match.
A properly fitted mattress prevents shifting and discomfort — critical for sleep quality in moving environments like RVs, boats, and trucks where standard mattresses slide around.
Custom mattresses designed for their intended environment — with moisture-resistant materials for marine use, durable cores for heavy daily use — outperform generic alternatives by years.
Select from soft, medium, firm, or hybrid comfort levels. We tailor the internal construction to your sleeping preference — something you can't customise with standard store-bought mattresses.
Optional waterproof covers for marine and outdoor use. Hypoallergenic materials available for sensitive sleepers. Built for the conditions your mattress will actually face.
These are the most commonly requested custom sizes. Can't find yours? We'll build any dimension you need.
| Size name | Dimensions (inches) | Dimensions (cm) | Ideal for |
|---|---|---|---|
| Three-Quarter (¾) | 48″ × 75″ | 122 × 191 cm | Vintage frames, boats, RVs |
| Short Queen (RV Queen) | 60″ × 75″ | 152 × 191 cm | RVs, campers, travel trailers |
| Truck Sleeper (Standard) | 35″ × 79″ | 89 × 201 cm | Semi sleeper cabs |
| Truck Sleeper (Wide) | 42″ × 80″ | 107 × 203 cm | Wide-cab trucks |
| Texas King | 80″ × 98″ | 203 × 249 cm | Taller sleepers, extra length |
| Wyoming King | 84″ × 84″ | 213 × 213 cm | Extra space, co-sleeping families |
| Alaska King | 108″ × 108″ | 274 × 274 cm | Maximum space, large rooms |
| Completely Custom | Your measurements | Your measurements | Anything — just tell us |
We craft custom mattresses for these common use cases — and many more. If it needs a mattress, we can build it.
MOTORHOMES, TRAVEL TRAILERS, FIFTH WHEELS
RV mattresses are rarely standard sizes. We build to your exact berth dimensions — including corner cuts for wheel wells and curved walls — so you sleep as well on the road as you do at home.
Corner cuts available
Lightweight foam
Compact shipping
LONG-HAUL RIGS, SLEEPER CABS, FLEET VEHICLES
Long-haul drivers deserve real rest. Our custom sleeper-cab mattresses are built to withstand daily use, road vibration, and temperature swings — while delivering the support your back needs after hours behind the wheel.
High-density core
Vibration dampening
Easy to clean
SAILBOATS, HOUSEBOATS, CRUISERS, YACHTS
Boat berths come in every shape imaginable — tapered, V-shaped, rounded, or angled. We build moisture-resistant mattresses that fit your vessel's cabin perfectly and resist mould, mildew, and salt air.
Moisture resistant
V-berth shapes
Anti-mould foam
ALASKA KING, WYOMING KING, TEXAS KING
Need something bigger than a standard King? We build oversized mattresses for families who co-sleep or anyone who wants maximum space. Custom thicknesses and firmness levels available on all sizes.
Up to 9′ × 9′
Family-friendly
Custom firmness
KIDS' ROOMS, CABINS, HOSTELS, RV BUNKS
Bunk beds — especially in RVs and cabins — rarely accept standard mattress sizes. We build to your exact bunk dimensions with safety-appropriate thicknesses so guardrails remain effective.
Safe thickness
Lightweight
Kid-safe materials
VINTAGE BEDS, DAYBEDS, WINDOW SEATS, MURPHY BEDS
Older Canadian homes often have antique bed frames, built-in daybeds, or window seats that don't accept modern mattress sizes. We build to the frame — not the other way around.
¾ sizes available
Odd dimensions
Custom thickness
From measurement to delivery — we make the custom mattress process simple.
Use a tape measure to get exact length, width, and depth. For irregular shapes, create a paper or cardboard template.
Call, visit, or fill out our contact form with your measurements, preferred firmness, and any special requirements.
Our craftspeople in BC build your mattress by hand using premium Canadian materials to your exact specifications.
Your custom mattress is compressed, boxed, and shipped to your door anywhere in Canada — or picked up in-store.
Accurate measurements are the key to a perfect fit. Here's how to get them right.
CUSTOM DIMENSIONS
We make mattresses to your
exact measurements.
CHOOSE YOUR FIRMNESS
Soft, medium, firm or extra firm
-customized for you.
WATERPROOF OPTIONS
Add a waterproof cover
for extra protection.
SHIPS ACROSS CANADA
Fast and reliable delivery
anywhere in Canada.
Use a tape measure to get the inside length, width, and desired thickness. For spaces with angled or rounded edges, we recommend creating a cardboard or paper template that fits the space exactly. You can also send us photos and measurements, and we'll confirm everything before production begins.
Absolutely. Every custom mattress can be made in soft, medium, firm, or hybrid comfort levels. We'll discuss your sleeping preferences during the consultation to ensure the right feel for your needs.
Yes. We offer waterproof covers designed for marine environments (boats, yachts, houseboats) and hypoallergenic materials for sensitive sleepers. These options can be added to any custom mattress at the time of order.
Most custom mattresses are handcrafted within 5–10 business days depending on complexity. Shipping adds 5–10 additional business days depending on your location in Canada. We'll give you a specific timeline when you place your order.
There's no practical minimum — we regularly build small bunk and crib-sized custom mattresses. For maximum sizes, we can go up to Alaska King (108″ × 108″) or larger for special requests. Contact us with your dimensions and we'll let you know what's possible.
Yes. All Seva custom mattresses come with our standard manufacturer's warranty that covers sagging beyond the specified limit, manufacturing defects, and faulty materials. Warranty terms may vary by model — we'll confirm details when you order.
Both work. You can visit our showrooms for an in-person consultation, or simply contact us online with your measurements, shape details, and preferences. We handle custom orders remotely across Canada every day.
Yes — we ship custom mattresses anywhere in Canada. Most custom foam mattresses are compressed and boxed for convenient doorstep delivery. Same-day local pickup and delivery is also available at our Surrey.
Every custom Seva mattress is handcrafted in Canada with premium materials, built to your exact specifications.