- Full Perimeter Edge Stability: Thicker wire perimeter coils reinforce all four sides to reduce edge collapse when sitting or sleeping close to the side, increases usable sleep area on a king bed, supports steadier in and out and daily routines, helps reduce the rolling toward center sensation, and keeps the edge feeling more secure when two sleepers spread out and use more of the mattress width through the night
- Ice Silk Cool Touch Cover: Ice silk fabric feels cool at first contact and helps move body heat away from the surface, the stitched channel quilted top keeps padding evenly placed for a more consistent surface feel, useful for warm master bedrooms, helps reduce the stuffy foam feel, and supports more comfortable sleep when two sleepers generate more heat overnight across summer nights and heated seasons
- Independent Motion Control Coils: Individually wrapped pocket springs respond under each sleeper instead of pulling the whole surface, comfort foam filters vibration so turning over or getting up is less likely to disturb a partner, reduces bounce and ripple across the bed, supports different schedules and light sleepers, and keeps the sleep surface calmer across the wider king size so movement feels less disruptive
- Balanced Cushion And Support: Comfort foam cushions shoulders and hips while the coil core supports the waist and back, creating a soft to firm transition that reduces pressure discomfort without deep sink, supports back and side sleepers, helps turning feel easier, and delivers a medium firm feel designed to stay steady through daily use when you want comfort depth without an overly plush collapse
- Master Bedroom Setup And Fit: Mattress in a box ships compressed for easier stairs and narrow hallways, unbox on your king frame and allow 24 to 72 hours to reach full shape, compatible with platform beds, slats, and box springs, reinforced edges support sitting on the side for daily routines, wrapped border keeps the profile looking clean, and normal room ventilation helps reduce new mattress smell during the first nights after setup
12 inch Hybrid Mattresses--Advances Vitalis
12 Inch / Twin
Sale price
$599.00
Regular price
$799.00
Skip to product information
12 inch Hybrid Mattresses--Advances Vitalis
Sale price
$599.00
Regular price
$799.00
Ships out in 2 - 7 business days via UPS
90 Day Trial Sleep
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Security Certification
Diamond Mattresses adhere to the most stringent global certification standards, so you can rest easy knowing your sleep space is safe, non-toxic, and free of fiberglass. Our mattresses feature OEKO-TEX® certified fabrics, guaranteeing textiles that are free from harmful substances, while all foam components are CertiPUR-US certified—ensuring low emissions, durable performance, and no ozone depleters, PBDEs, or other harmful chemicals. Together, these certifications deliver a healthier, more sustainable sleep environment for complete peace of mind.
Is assembly required for the mattress?
No assembly is required for your Diamond Mattress—setup is quick, tool-free, and hassle-free! Here’s how it works:
1. **Unbox easily**: Your mattress arrives compressed, rolled, and sealed in a compact box. Simply cut the outer plastic packaging (we recommend using scissors to avoid damaging the mattress cover) and remove the rolled mattress.
2. **Unroll & expand**: Lay the mattress flat on your bed frame (platform, box spring, or adjustable base) and let it fully unroll. No tools, no extra parts—just unroll and go.
3. **Wait for rebound**: The mattress will start expanding immediately, and it typically reaches its full shape and firmness within 24-72 hours (allowing 48 hours is ideal). You can sleep on it right away, but waiting ensures the foam and coils settle to their optimal comfort level.
Pro tip: For faster expansion, keep the room well-ventilated and avoid placing heavy objects on the mattress while it’s expanding!
Free Shipping
90 Day Trial Sleep
2 Year Warranty
Safely Protect Your Family’s Sleep
Our mattresses are designed for lasting comfort and durability. With a 90-night trial and 10-year limited warranty, we stand behind the quality that supports your family’s well-being.
CERTIFIED FOR A HEALTHY HOME
All Lunarflex mattresses proudly carry GREENGUARD Gold certification, ensuring they meet strict health-based and environmental criteria for low chemical emissions.
3 EASY STEPS FOR SETUP
1.Unbox 2.Unroll 3.Expand
Our mattresses ship fast from our US factory straight to your door. With just 3 simple steps, you’ll be settled in and enjoying a deep, restful sleep in no time.
LUNARFLEX BRAND STORY
Founded in 2008, Lunarflex was built on one simple idea: everyone deserves healthy, steady sleep without unnecessary cost or complexity.
We focus on honest, intentional craftsmanship, not empty marketing. Every mattress uses certified safe materials, balanced support and quiet comfort, designed for real homes—dorms, apartments and family bedrooms.
Backed by a 10-year warranty and 90-night sleep trial, we stand firmly behind our quality.
For more than a decade, Lunarflex has stayed true: creating reliable sleep that lasts, for you and your everyday life.
Find Your Perfect Mattress Fit
Not sure which mattress size works for your space? Our detailed size guide breaks down dimensions for every standard and split option, so you can select the ideal fit for your bed frame and sleep style.
CUSTOMER FEEDBACK
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FAQS
1. What is your sleep trial policy?
We offer a 90-night risk-free sleep trial for all our mattresses—because we believe you need time to truly adjust to a new sleep surface! Here’s how it works:
- Start your trial from the day your mattress is delivered (we ask for a 30-night break-in period first, as new mattresses need time to fully expand and soften to their optimal feel).
- If you’re not completely satisfied after 30 nights, contact our support team anytime before the 90th night to initiate a return.
- We’ll arrange free pickup of the mattress and issue a full refund (no restocking fees!) to your original payment method within 5-7 business days.
2. What does your mattress warranty cover?
Our mattresses are backed by a 10-year limited warranty to protect you against manufacturing defects—we stand behind the quality of our materials and craftsmanship! The warranty covers:
- Structural defects: Sagging greater than 1 inch (excluding normal wear and tear), broken or loose coils (for innerspring models), or defective foam that cracks/breaks down prematurely.
- Material defects: Defects in the cover fabric (e.g., unraveling seams) or internal padding that shifts unevenly.
Important notes: The warranty is non-transferable and applies only to the original purchaser. It does not cover damage from improper use (e.g., spills, stains, using an unsupported bed frame) or normal wear and tear over time.
3. Do you offer free shipping and old mattress removal?
Yes! We make mattress shopping as easy as possible with free curbside shipping to all 50 U.S. states (including Alaska and Hawaii—additional delivery time may apply). For most orders, you’ll receive your mattress in 3-7 business days via FedEx or UPS, compressed and rolled in a compact box for easy setup.
We do not provide old mattress removal or pickup services. For responsible disposal in the U.S., consider these options:
- Schedule bulk trash pickup with your local sanitation department.
- Donate gently used mattresses to a local charity (e.g., Habitat for Humanity ReStore).
- Use a licensed mattress recycling service (e.g., LoadUp) for convenient pickup.
Reach out to our team if you need help finding local disposal resources!
4. How do I care for my mattress to extend its lifespan?
Proper care can keep your mattress comfortable and supportive for years! Follow these simple tips:
- Rotate regularly: Rotate your mattress 180° every 3 months (for single-sided models) to prevent uneven sagging—no flipping needed (our mattresses are designed to be used on one side only).
- Use a mattress protector: A waterproof, breathable protector will shield against spills, stains, and dust mites (this also helps keep your warranty valid!).
- Keep it clean: Spot clean with a mild detergent and damp cloth—never use harsh chemicals or steam cleaners, as they can damage the foam/coils.
- Support properly: Always use a firm, flat foundation (box spring, platform bed, or slatted frame with slats no more than 3 inches apart) to avoid structural damage.
5. Do I need a box spring or special foundation for my mattress?
Our mattresses are designed to work with most standard bed frames—but the right foundation will maximize comfort and durability! Here’s a quick guide:
- Box spring: Works great for innerspring mattresses (adds extra support and absorbs shock) but is not required for memory foam or hybrid models.
- Platform bed: Perfect for all mattress types! A solid platform or slatted frame (slats ≤3 inches apart) provides the firm, even support our mattresses need—no box spring necessary.
- Adjustable base: Fully compatible! Our mattresses are flexible enough to bend with adjustable frames (great for reading, watching TV, or relieving back pain).
Pro tip: Avoid using soft or sagging foundations (e.g., old box springs with broken coils) — they can void your warranty and reduce the lifespan of your mattress!
Intentional design
Everything we do starts with why
Made with care
We believe in building better
A team with a goal
Real people making great products
