MADE IN WINNIPEG SINCE 1992
RV - Sleepwell Core (Extra Firm)
RV - Sleepwell Core (Extra Firm)
High-Density Foam Core
Flippable Two-Sided
Extra-Firm
Best for: Back and stomach sleepers who want maximum firmness with virtually no sink.
Maximum firmness with virtually no sink sets Sleepwell Core apart. This Winnipeg-made, flippable foam mattress combines an ultra-dense support core with light quilting on both sides for an exceptionally stable surface—ideal for back and stomach sleepers and anyone who dislikes soft, body-hugging mattresses.
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Firmness Rating: 10/10 — Extra Firm
Mattress Height: Available in 4”, 6”, 8”, or custom heights
For travellers who refuse to compromise on firmness, the RV - SLEEPWELL CORE EXTRA FIRM Mattress delivers the strongest foam support in the RV collection. Its high-density construction is ideal for frequent travellers, long seasonal stays, and RV owners replacing a soft or unsupportive factory mattress.
Its 10/10 extra-firm feel is designed for back and stomach sleepers and customers who want virtually no sinking. The solid foam core maintains a highly stable surface, while light quilting on both sides provides a comfortable finish.
- Maximum RV Support: Creates an exceptionally solid and stable sleeping surface.
- Virtually No Sink: Designed for travellers who dislike soft or body-hugging mattresses.
- High-Density Foam Core: Helps resist sagging, soft spots, and loss of shape.
- Ideal for Extended RV Use: A durable upgrade for frequent travel and longer seasonal stays.
- RV-Friendly Sizing: Available in popular RV sizes shown in the Size Guide.
- Custom Sizes Available: Can be made for non-standard RV sleeping platforms.
- Flexible Height Options: Choose from 4”, 6”, 8”, or another custom height.
- Fully Flippable: Both sides can be used for balanced wear and longer mattress life.
- Quiet Foam Construction: Contains no coils that may create noise or movement.
- Locally Manufactured: Handcrafted in Winnipeg by Sleepwell Bedding.
- Full-Size Delivery: Delivered flat and never compressed or rolled.
- Custom Orders: Call 204-786-2225 for custom sizing, pricing, and availability.
RV - SLEEPWELL CORE EXTRA FIRM is built for travellers seeking maximum firmness, custom sizing, quiet performance, and dependable long-term support.
Important: Measure the RV sleeping platform and entry path carefully before ordering. For those who want the ultimate in supportive sleep, Buy Best mattress in Winnipeg from Sleepwell Bedding today.
RV - SLEEPWELL CORE EXTRA FIRM combines a high-density polyurethane foam core with comfortable quilting on both sides for maximum RV support.
Layer Breakdown:
1. Breathable Fabric with Quilted Comfort Foam
The outer fabric is quilted with ½” of comfort foam on both sides, adding light surface comfort without reducing the extra-firm feel. Fabric colour and pattern may vary.
Technical specification: 28 ILD.
2. High-Density Extra-Firm Polyurethane Foam Core
A high-density polyurethane foam core provides maximum firmness and structural stability. Core thickness varies according to the selected mattress height.
Technical specification: 2 lb/ft³ density, 90 ILD.
Quality & Safety Standards:
- ASTM D3574-05 foam testing standards
- CertiPUR-US® certified foam
- CAL TB117-2013 flammability requirements
- BioFlex sustainable foam with plant-based material
- ISO 9001:2015 quality management standards
RV - SLEEPWELL CORE EXTRA FIRM includes a 5-year limited factory warranty covering qualifying foam-integrity and workmanship defects under normal use.
- Flip and rotate every 3–6 months for balanced wear
- Use a breathable mattress protector
- Place on a flat, supportive RV sleeping platform
- Keep the mattress and platform dry and well ventilated
- Check underneath regularly for condensation or trapped moisture
- Allow the mattress to dry completely before closing or storing the RV
- Spot clean only when needed
- Do not fold, sharply crease, or force the mattress through a narrow opening
With proper care, RV - SLEEPWELL CORE EXTRA FIRM will provide maximum firmness and dependable support through frequent travel and extended RV stays.
Read more: Warranty and Return Policy
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Compare standard Canadian mattress sizes, RV mattress sizes, hide-a-bed mattresses and custom options available from Sleepwell Bedding in Winnipeg. Dimensions are shown as width × length in inches. Finished mattress dimensions may vary by up to 1 inch due to manufacturing tolerances. If you need a non-standard size or shape, carefully measure your available space and contact us before ordering.
Standard Mattress Sizes
• Twin — 38″ W × 75″ L
• Twin XL — 38″ W × 80″ L
• Double / Full — 54″ W × 75″ L
• Queen — 60″ W × 80″ L
• King — 76″ W × 80″ L
RV Mattress Sizes
• RV Bunk — 30″ W × 74″ L
• RV Short Queen — 60″ W × 74″ L
• RV Queen — 60″ W × 80″ L
• RV King — 72″ W × 80″ L
RV dimensions can vary between manufacturers. Measure the available platform or opening carefully before ordering.
Hide-a-Bed Mattress Sizes
• Twin — 30″ W × 71″ L × 4″ H
• Double — 52″ W × 71″ L × 4″ H
• Queen — 60″ W × 71″ L × 4″ H
Hide-a-bed openings and folding mechanisms can vary. Measure the available platform, opening and folded clearance carefully before ordering.
Crib, Three-Quarter and Truck Mattress Sizes
• Crib Mattress — approximately 28″ W × 52″ L
• Three-Quarter (3/4) Mattress — 48″ W × 75″ L
• Truck Mattress — custom sizes available
Crib frames and truck sleeping spaces can vary. Confirm the required measurements carefully before ordering.
How to Measure for a Mattress
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Measure the inside width and length of the bed frame, platform or opening—not the outside edges.
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Measure the available height and clearance, especially for RV bunks, hide-a-beds and truck sleeping spaces.
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Measure at several points because custom spaces may not be perfectly square.
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Note any rounded corners, angled edges, cut-outs or folding requirements. A simple drawing or photo can help us confirm your custom mattress.
Split Box Spring Measurements
• Double (2 pieces): Each piece is approximately 27″ W × 75″ L × 7″ H. Combined size: 54″ W × 75″ L.
• Queen (2 pieces): Each piece is approximately 30″ W × 80″ L × 7″ H. Combined size: 60″ W × 80″ L.
• King (2 pieces): Each piece is approximately 38″ W × 80″ L × 7″ H. Combined size: 76″ W × 80″ L.
Both pieces are placed together to support the full mattress. Measurements are approximate and may vary by up to 1 inch.