Size: Twin  • Comfort level: Firm
Construction: Traditional innerspring with Bonnell coils
Comfort layer: 2" high-density quilt foam
Coil support: 13-gauge interconnected Bonnell coil unit
Additional support: High-density pad
Profile: 8" mattress thickness
Foundation/box spring: Available separately
Setup: Ships compressed in a box; allow up to 48 hours for expansion
Warranty: 5-year non-prorated manufacturer warranty
Why choose the Ashley Sleep 8-Inch Bonnell Hybrid Twin Mattress M58711?
The Ashley 8-Inch Bonnell Hybrid M58711 offers traditional firm spring support in a compact Twin size, making it practical for a single-sleeper bedroom, guest room or other space where floor area matters. Its 13-gauge Bonnell coil unit provides a connected spring support system, while 2 inches of quilt foam cushion the surface without creating a deeply plush feel. The 38-inch width preserves more room for surrounding furniture than a Full or Queen mattress, and the 8-inch thickness keeps the sleeping surface relatively low on the same foundation. This straightforward construction suits shoppers who prefer a firmer, traditional innerspring feel, although comfort and spring responsiveness vary by sleeper. Also offered in California King size; confirm the size-specific SKU before ordering.
Specificationsâ–¶
Specifications Details
Brand Name
Sierra Sleep® by Ashley
Material
Fabric
Lifestyle
Traditional
Bed Size
Twin
Pattern
Textured
Mattress Feature
Hybrid
Assembly
Assembly Not Required
Product Detailsâ–¶
Comfort level: firm
2" high-density quilt foam; high-density pad
13-gauge Bonnell coil unit
5-year non-prorated warranty
Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details
Foundation/box spring available, sold separately
State recycling fee may apply
Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening
Availabilityâ–¶
Available Configurations
SKU M58711 — Twin Dimensions: 74.5''W x 38''D x 8''H | Weight: 33.0 lbs▶
This option is a Twin Mattress.
SKU M58751 — California King Dimensions: 83.5''W x 72''D x 8''H | Weight: 67.0 lbs▶
This option is a California King Mattress.
Is the Ashley 8-Inch Bonnell Hybrid Twin M58711 a good size for a small bedroom or guest room?
The Ashley M58711 measures 38 inches wide and 74.5 inches long, making it practical for one sleeper in a smaller bedroom, guest room or apartment. Compared with a standard Full mattress, the Twin saves approximately 16 inches of width, leaving more space for a nightstand, dresser or walking path. However, taller sleepers should consider that a Twin XL typically provides five additional inches of length. Choosing between
Twin, Twin XL and Full mattress dimensions for different sleepers and room layouts
depends on the sleeper's height, desired sleeping space and available bedroom area.
How firm is the Ashley Bonnell Hybrid Twin M58711, and what does the quilt foam add?
Ashley rates the M58711 as firm, with 2 inches of high-density quilt foam over a 13-gauge Bonnell coil system. The quilted foam cushions the surface, while the connected coils provide traditional spring-based support. This construction may appeal to sleepers who prefer a more resistant feel rather than deep memory-foam contouring. Unlike individually wrapped pocket coils, Bonnell springs are interconnected and may transfer more movement or create a bouncier sensation. Some feedback about the broader model family mentions traditional firm support, while other buyers report noticeable spring feel or noise; these experiences are not verified as Twin-specific. The difference between
firm underlying support and the amount of cushioning above it
is important when deciding whether this mattress matches your comfort preferences.
Can the 8-inch Ashley Bonnell Hybrid M58711 be used on a bunk bed, and how high will it sit?
The 8-inch mattress thickness creates a relatively low sleeping surface. For example, a bed with its mattress-support surface 12 inches above the floor would have an approximate mattress-top height of 20 inches before compression. The relationship between
mattress profile, bed-frame height and comfortable access
is useful when selecting a foundation. Although the Twin size may physically fit some bunk beds, compatibility must be confirmed against the bunk-bed manufacturer's maximum mattress thickness, guardrail clearance and support requirements. An 8-inch mattress should not automatically be considered bunk-bed safe. A foundation or box spring is sold separately. The mattress arrives compressed in a box and should be allowed up to 48 hours to expand fully after opening. Ashley lists a 5-year non-prorated manufacturer warranty.
Looking for the Ashley Sleep 8-Inch Bonnell Hybrid Twin Mattress M58711? VBU Furniture provides local pickup, Chicago and Illinois delivery, and nationwide shipping across the contiguous 48 states. Contact us about available delivery and setup options.
Add To Your Room
Bring the whole look together. We’ve hand-picked complementary Ashley Furniture pieces that pair
beautifully with your mattress — everything you need to finish the space, all
in one place.
