At LA Mattress Store, we offer the best brands at guaranteed low prices. Every mattress comes with our 120-Night Comfort Exchange — if it's not the right fit, exchange it free. Plus, enjoy free white-glove delivery and setup throughout greater Los Angeles and flexible 0% financing up to 48 months.

Cobalt Extra Firm 13" Mattress by Southerland

Quality sleep at the best value

With roots tracing to 1893, Southerland’s unending commitment to its customers and business partners has allowed us to grow into one of the largest and most respected bedding manufacturers in the United States. Because America sleeps on Southerland, we think it’s important that our sleep systems are made in America.

• Designed and made in the USA.
• Premium Breathable Cool to-the Touch Cover.
• Luxury HD Comfort Foam
  
• Quilted Gel Infused Memory Foam
• HD Bounce Support Foam
  
• 8" 800 Wrapped Coil with PowerEdge®
  
• Recommended for back, stomach, and side sleepers who enjoy a firmer feel

Certifications    
All the foams in this mattress have environmental certifications that ensure they are safe and non-toxic. Our polyurethane foams (memory foam, transition foam, and poly support foam) are CertiPUR certified.

LA Mattress Stores provides a variety of sizes to fit any bedroom:

• California King Mattress: 84" wide x 72" long
• King Mattress: 76" wide x 80" long
• Queen Mattress: 60" wide x 80" long
• Full Mattress: 54" wide x 75" long
• Twin XL Mattress: 39" wide x 80" long
• Twin Mattress: 39" wide x 75" long

These sizes ensure comfort for both individuals and couples. Choose from spacious King or Queen sizes or compact Full, Twin XL, or Twin.

LA Mattress Stores also offers sets including mattress and foundation:

• King Mattress Set
• California King Mattress Set
• Queen Mattress Set
• Full Mattress Set
• Twin XL Mattress Set
• Twin Mattress Set

Explore these options to find the perfect fit for your bedroom and enjoy a restful sleep on a LA Mattress Stores Clearance Mattress.

This mattress is backed by the manufacturer's warranty covering defects in materials and workmanship. Warranty terms vary by brand — contact us or visit any LA Mattress Store location for complete warranty details for this specific product. Learn more about warranties.