The Charm Ultra Firm 12" Pocket Coil Mattress by Spring Air is designed for sleepers who prefer a distinctly firm, supportive sleep surface with targeted spinal support and minimal motion transfer.

Part of the Spring Air Back Supporter Elite collection, the Charm combines a 5-Zone 8" pocket coil system, high-density foams, zoned gel memory foam, and breathable Tencel fabric. The pocket coil system uses firmer coils through the lumbar area to provide additional support where the body needs it most, while independently responding coils help reduce motion transfer between sleeping partners.

The mattress begins with a breathable Tencel fabric cover, complemented by a cushioning silk and wool fibre blend. A layer of firm ECOTEX™ gel foam contributes cooling, support, and durability, while extra-firm high-density foam reinforces the mattress's ultra-firm feel. A ½" zoned gel memory foam layer provides additional pressure-point relief and contouring.

At its core, the 5-Zone 8" 1,200-count pocket coil system is designed for pressure relief, reduced motion transfer, and enhanced lumbar support. A Foam Encased Solid Sleep Edge provides stable edge support and helps maximize the usable sleeping surface.

At 12 inches high with a Tight Top construction and Ultra Firm comfort level, the Charm is purpose-built for customers looking for a firmer sleep experience. It is also adjustable-base friendly, CertiPUR-US certified, and proudly made in Canada.

Available in Single, Double, Queen, and King sizes under one convenient product listing.

NOTE: Canadian/ custom-made with production time around 10-15 days

Ultra Firm comfort level
12-inch mattress profile
Clean Tight Top construction
5-Zone 8" 1,200-count pocket coil system
Firmer coils provide additional support through the lumbar area
Pocket coils help reduce motion transfer for less partner disturbance
½" Zoned Gel Memory Foam for contouring and pressure-point relief
1½" Extra Firm ECOTEX™ High Density Foam for firm support and comfort
1" Firm ECOTEX™ Gel Foam contributes cooling, support, and durability
½" ECOTEX™ High Density Foam provides additional coil support
Foam Encased Solid Sleep Edge enhances edge-to-edge sleeping space and stability
Breathable Tencel fabric cover
Silk and wool fibre blend adds cushioning and breathability
Designed to promote spinal support and pressure relief
Adjustable-base friendly
CertiPUR-US certified foams
Proudly made in Canada
Spring Air participates in a One Tree Planted sustainability program

Mattress Construction

Cover:
Breathable Tencel fabric with a durable, natural and smooth texture.

Quilt Layers:
Silk and wool fibre blend + 1" Firm ECOTEX™ Gel Foam

Upholstery Layers:
1½" Extra Firm ECOTEX™ High Density Foam + ½" Zoned Gel Memory Foam

Support Core:
5-Zone 8" 1,200-count Pocket Coil System

Edge Support:
Foam Encased Solid Sleep Edge

Additional Core Support:
½" ECOTEX™ High Density Foam

Available Sizes:
- Twin: 38″ W x 74″ L x 12″H
- Double: 53″ W x 74″ L x 12″H
- Queen: 60″ W x 79″ L x 12″H
- King: 76″ W x 79″ L x 12″H

Use a supportive foundation or compatible adjustable base.
Always use a quality mattress protector to help protect against spills and stains.
Rotate the mattress periodically to encourage even wear.
Do not fold, bend, or sharply crease the mattress.
Keep the mattress dry and allow adequate ventilation.
Vacuum the surface gently when routine cleaning is required.
Do not saturate the mattress with water or cleaning products.
Follow the manufacturer's warranty and care requirements.