Sleep Basil's 120-Night Sleep Guarantee
Because great sleep doesn't happen overnight. But we're with you every step of the way.
Choosing a new mattress is one of the most personal decisions you'll make for your health and wellbeing. We take that seriously. That's why every new mattress purchase at Sleep Basil comes with our 120-Night Sleep Guarantee, one of the most generous in the Denver area, backed by over 25 years of combined experience in the mattress industry and a genuine commitment to your long-term sleep.
Give It Time. Trust the Process.
Here's something we've learned after helping thousands of Coloradans find their perfect sleep setup: a new mattress is a big adjustment. Your body has likely spent years adapting to your old bed, and transitioning to a new sleeping surface takes time, even when it's a better one.
In our experience, roughly 50% of customers who called within the first two weeks wondering if they made the right choice ended up absolutely loving their mattress after a full month. The mattress wasn't the problem. Their body just needed time to settle in.
So before you reach out to exchange, we encourage you to lean in. Give yourself the full break-in window. You made a thoughtful choice, and chances are, you're closer to loving it than you think.
The Policy: What's Covered
✅ What Qualifies
- All new mattress purchases from Sleep Basil
- Purchases accompanied by an approved waterproof mattress protector (required to protect your warranty and qualify for the guarantee)
- Mattresses that have been slept on for a minimum of 30 nights before initiating an exchange or return
❌ What Doesn't Qualify
- Floor models, clearance mattresses, or previously exchanged mattresses
- Mattresses without an approved waterproof mattress protector in use
Free Delivery & Haul Away
Every new mattress purchase within 50 miles of our store includes:
- Free White Glove Delivery: We'll bring it in, set it up, and make sure everything looks right
- Free Haul Away: We'll remove your old mattress on a one-for-one basis (buy two beds, we haul away two, and so on)
Exchange & Return Options
Your First Exchange: No Restocking Fee
Not feeling it after 30+ nights? No problem. We'll help you find something that works better.
- No restocking fee on your first exchange
- Upgrade to something more expensive? You pay only the difference
- Switch to something less expensive? We'll refund you the difference
- Bought on sale? Your exchange will be priced at the current promotion at the time of the exchange. We can't guarantee the same discount will still be running, so we encourage you to take advantage of any active offers when you shop
Would Rather Have a Refund?
If after 30 nights you've given it a real shot and there's simply nothing in our store you'd like to switch to, we can schedule a pickup and issue a full refund (minus a $200 pickup fee to cover logistics).
Second Exchanges
Life happens. If you need a second exchange, we're still here for you, though a 20% restocking fee will apply.
Please note: After a second exchange, we are no longer able to offer additional exchanges or returns on that purchase. We want to be upfront about this so you can make the most informed decision possible.
Accessories & Top-of-Bed Products
- Opened accessories (including pillows, sheets, mattress protectors, toppers, comforters, and other Sleep Basil products) are not eligible for return or exchange once opened
- Unopened accessories may be returned or exchanged
We always recommend trying products in-store before purchasing, and our team is happy to walk you through options before you commit.
Tips for Breaking In Your New Mattress
Getting the most out of your new bed starts with a few simple habits. These might sound a little quirky, but trust us, they make a real difference.
1. Walk it in (seriously): This one surprises people, but it works: take your shoes off and walk slowly across the entire surface of your new mattress for three to five minutes. This helps the quilt layer stretch out and allows the comfort foams to decompress, so your body can sink in properly when you sleep.
2. Rotate after two weeks: Couples tend to break in their sides of the mattress at different rates. Solo sleepers often gravitate toward one spot. Rotating the mattress 180° after the first two weeks helps it break in evenly and extends its life.
3. Make sure your sheets fit: A fitted sheet that's too shallow for your new mattress can act like a compression layer, pulling the mattress taut and making the whole bed feel firmer than it is. Make sure your sheets and protector have enough depth to fit without stretching.
4. Think about your whole sleep system, especially if you sleep hot: We hand-select mattresses that have been independently tested for temperature regulation. That said, if you're sleeping warm, the mattress itself is rarely the culprit. Your mattress protector, sheets, and comforter all work together as a system.
- We recommend DreamFit DreamCool mattress protectors, which have been independently tested as one of the most breathable protectors on the market, while still safeguarding your mattress warranty against sweat, spills, dust mites, and skin cells.
- Our 100% Bamboo sheets are excellent for temperature regulation year-round.
- For summer months, a lightweight comforter goes a long way. Sleep experts recommend keeping your bedroom between 60–67°F for optimal sleep. <a href="https://health.clevelandclinic.org/what-is-the-ideal-sleeping-temperature-for-my-bedroom" target="_blank">According to the Cleveland Clinic</a>, this range helps your body reach and maintain the deeper stages of restorative sleep. Women tend to sleep comfortably at the warmer end of that range, while men often prefer it a touch cooler, and around 65°F is a great compromise for most couples.
5. Don't forget your pillow: When you change mattresses, the way the bed contours to your shoulders and supports your neck changes too, which means the pillow that worked perfectly before might not be the right fit anymore. Side sleepers and back sleepers have very different pillow needs, and the depth of your shoulder matters more than most people realize. If something still feels off after a few weeks, your pillow might be the missing piece. Our team is happy to help you find the right match.
6. New mattress smell? Totally normal: Like a new car or freshly installed carpet, a new mattress can have a slight smell when it's first unpacked. This is normal and not harmful. The foams we carry that aren't all-natural are CertiPUR-US® or GREENGUARD Gold certified, meaning they've been independently tested to ensure no harmful VOCs or off-gassing materials. The smell typically comes from the packaging itself and dissipates quickly with a little airflow.
7. A great mattress supports you, but it's not a medical fix: A properly fitted mattress can do a lot: reduce pressure points, improve spinal alignment, and help with the aches and pains that come from everyday Colorado living. What it can't do is resolve chronic or pre-existing conditions that require medical care. If you're dealing with ongoing pain or sleep issues, we always encourage you to work with a healthcare provider alongside finding the right sleep setup.
Frequently Asked Questions
How long do I have to try my new mattress before I can exchange it?
You need to sleep on it for a minimum of 30 nights before initiating an exchange or return. We know that might feel like a long time when you're uncomfortable, but your body genuinely needs that adjustment window. Most people who push through those first few weeks are glad they did.
Do I really need a mattress protector?
Yes. An approved waterproof mattress protector is required to qualify for our 120-night guarantee. It also protects your manufacturer warranty. We sell DreamFit DreamCool protectors in-store and are happy to help you find the right size and fit.
What if I bought my mattress on sale? Will I get the same deal on an exchange?
Your exchange will be priced at whatever promotion is currently running at the time of your exchange. We can't guarantee the same discount will still be in effect, so we encourage you to take full advantage of any active offers when you buy.
Is there a fee to return my mattress?
If you'd like a refund rather than an exchange and there's nothing in our store that feels like the right fit, we can pick up the mattress and issue a refund after 30 nights (minus a $200 pickup fee). First exchanges carry no restocking fee. Second exchanges carry a 20% restocking fee.
What if I need a second exchange?
We've got you. A second exchange is available with a 20% restocking fee. After a second exchange, we're no longer able to offer additional returns or exchanges on that mattress purchase.
Can I return opened accessories like pillows or sheets?
Unfortunately, no. Once opened, accessories, including pillows, sheets, mattress protectors, toppers, and comforters, cannot be returned or exchanged. Unopened accessories are eligible for return or exchange.
My new mattress has a smell. Is that normal?
Completely normal. Like a new car or new carpet, a new mattress can have a slight odor when first unpacked. It's not harmful. The foams we carry are CertiPUR-US® or GREENGUARD Gold certified, meaning they've been tested to be free of harmful materials. Open a window, let it breathe, and it'll clear up quickly.
Do I need a new pillow with my new mattress?
Possibly! When your mattress changes how your shoulders and neck are supported, your pillow needs can shift too. If things still feel a little off after a few weeks, come in and let us take a look. It might be a pillow situation, not a mattress situation.
Does the guarantee apply to floor models or clearance mattresses?
The 120-night guarantee applies to new mattress purchases only. Floor models, clearance items, and previously exchanged mattresses are not eligible.
Do you haul away my old mattress?
Yes! Free haul-away is included with every new mattress delivery within 50 miles of our store, on a one-for-one basis. Buying two mattresses? We'll haul away two. It's that simple.
Still Have Questions?
We're a small, locally owned team and we genuinely love helping people sleep better. If you're unsure about anything (your mattress, your sleep system, or your guarantee), just reach out.
📍 6485 E Hampden Ave, Denver, CO 80222 📞 (720) 219-7942 🕐 Mon–Sat: 10am–6pm | Sun: 11am–5pm
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