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Description
Undercover FX51013 Tonneau Cover Flex 16-24 Titan 5'7"Introducing the next generation of folding covers the UnderCover Flex folding cover. Flex combines the best of both worlds, the security of a hard locking cover and convenience of a soft roll up cover. Constructed from the best materials available, Flex will withstand the abuse Mother Nature throws at it and keep coming back for more. Low Profile Ultra low profile design rests inside the bed rails allowing for a very sleek look. Full Access Built in
Introducing the next generation of folding covers -- the UnderCover Flex folding cover. Flex combines the best of both worlds, the security of a hard locking cover and convenience of a soft roll up cover. Constructed from the best materials available, Flex will withstand the abuse Mother Nature throws at it and keep coming back for more. Low Profile -- Ultra-low profile design rests inside the bed rails allowing for a very sleek look. Full Access -- Built in prop rods secure the cover allowing your truck to be driven with the cover fully open. Easy Removal -- Entire cover can be removed in seconds with no tools needed. Secure Design -- Plastic buckles and straps are included to secure the panels in the partially open position. FRP Composite Panels -- Lighter, stronger and higher dent resistance than aluminum. Weather Resistant -- Rubber seals and drain tubes channel water away from and out of the bed. Easy Clamp-on design. No other folding cover can match the Flex for versatility, security and function. Covered or uncovered, always an option with UnderCover.
- Ultra Low Profile Design
- Allows For Full Access To Your Bed
- Built In Prop Rods Secure The Cover
- Plastic Buckles And Straps Included
- Rubber Seals And Drain Tubes Channel Water Away
- Easy Clamp-on design and 3 Year Warranty
Features & Benefits
- Non-Lockable
- Low-Profile Design With An UV Protective Black Finish
- Aluminum Top Skin Panel
- Three Secure Driving Positions, With 100 Percent Bed Access
- Dual Action Tailgate Seal
- Easy To Install And Remove With Clamp-On Design
- Limited 3 Year Warranty
Attributes
- Type: Hard Folding
- Folds/Panels: 2 Folds/ 3 Panels
- Hinged At Front: Front Hinge Allows Entire Tonneau to Flip Up When Folded
- Profile: Low Profile
- Color Group: Black
- Color/ Finish: Black Semi-Gloss Textured
- Material: Aluminum
- Locking Type: Non-Lockable
- Compatible With Ladder Rack: Not Ladder Rack Compatible
- Compatible With Headache Rack: Not Compatible With Headache Rack
- Bed Side Rail Mount: Inside Rail Mount
- Tool Box Info: Not Compatible With Tool Box
- With Lights: Not Applicable
- Installation Type: Clamp-On
- Drilling Required: Drilling Not Required
- Additional Info1: Bed Rail Compatible, Bed Cap Compatible
- Estimated Install Time (Hours): 1
Additional Attributes:
- GTIN: 816391020561
- Actual Color: Black
- Finish: Textured Black
- Works w/Toolbox: No
- Style: Hard Folding Cover
- Sits on Truck Rails: Yes
- Rails To Install: Yes
- Paintable: No
- Material: Aluminum
- Low Profile: Yes
- Key Lockable: No
- Install Time: 15 Minutes
- Full Bed Access: Yes
- Front Opening: Yes
- Color: Black
Packaging:
- Quantity of Each: 1
- Package UOM: EA
- Dimension: 32.000 x 82.000 x 8.000 inches
PDF:
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 2056 reviews
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Product Reviews
★★★★★ 5
Pleasant surprise, warm and fluffy
Size: Queen, Color: White, Size: Queen, Color: White
For the past couple years my girlfriend and I have gone through a few cheap comforters. We never really gave much thought to them and subsequently they never impressed us. I grew up using a down comforter and have very fond memories of that blanket. The comfort and warmth was something that I hadn't experienced since I had moved out and gotten my own comforter. So this has been in the back of my mind ever since but I wasn't sure if I wanted to dish out that kind of money for a blanket and also deal with the hassle of dry cleaning it. Also by purchasing a down blanket we'd be supporting an industry in which the down feathers from geese are taken from them and that's not something we personally wanted to support. So for all those reason we started looking into down alternative. The first thing that made me question these products was the price, they seem TOO cheap. I was raised with the mantra, "you get what you pay for" and with that in mind I was quite weary when looking at these products. I always make sure to compare many different products and read through the reviews, both good and bad before I buy something. I decided to take a chance on this particular one as it seemed to be the highest rated by customers and I liked what I saw in the images provided by said customer. If anything, the price was low enough that I wasn't too worried if I didn't end up liking it.
Now I wasn't actually home when it arrived but my girlfriend confirmed that it was very flat right out of the package, as was expected. By the time I got home 2-3 hours later it appeared to be fully fluffed. The material it is made of is very soft and comfortable on your skin and I was pleasantly surprised with the thickness/fluffyness. It is a fairly light blanket, similar to a down blanket I suppose in that regard. So far I have only slept with it one night but it did a great job of keeping me warm. I live in Wisconsin and the temperatures this week have been ranging from -10 over night to single digits during the day. I had been using 2 blankets prior to getting this one and sometimes I would still wake up in the night feeling cold. But so far with this blanket alone I have stayed warm which again was a pleasant surprise.
I do have to say that this doesn't remind me a whole lot of my down blanket and I think that may have to do with the material used in the shell. And you're not going to be 100% able to recreate a down blanket not using down. So if you are looking for something that feels exactly like down and won't be satisfied otherwise, this might not be for you. However, if you are looking for a good quality, warm, fluffy and affordable priced blanket that will give you that "cloud" like feeling, I think you would be really happy with this blanket.
Again this is my opinion from using it for one night, I can not comment on the durability or longevity of this blanket, but I am hoping that it holds up over time.
**also our cats immediately fell in love with it, it is their new favorite spot to nap.
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Reviewed in the United States on December 29, 2017
★★★★★ 5
High quality duvet!
Size: Twin XL, Color: White, Size: Twin XL, Color: White
Extremely comfortable, soft, and thick duvet! It is also very light despite its thickness, and it makes all my comforters look super fluffy. It keeps me warm without making me sweat. It’s easy to wash, high quality, and it has 3 loops on all 4 sides of the comforter. You could also use this duvet by itself if you wanted to since it is so comfortable and looks like a white comforter on its own. Absolutely love this duvet and do recommend!
(I will add another photo of the duvet by itself when I take the duvet cover off to wash it)
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Super impressed for the price!
Size: Queen, Color: White
I didn’t have super high expectations ordering this, but it ended up being way better than I thought. It’s really soft and has that fluffy look without feeling super heavy. I was worried it would feel cheap or flat, but it actually holds its shape really well.
I’ve been using it for a bit now and it still looks good on my bed, not lumpy or uneven. It’s warm enough but not too hot, so I’ve been able to use it comfortably without waking up overheating.
I’ve also washed it and it didn’t fall apart or lose its fluff, which was a big thing for me. For the price, it honestly feels like something more expensive.
Only thing I’d say is if you like a super thick/heavy comforter, this one is more on the lightweight side, but I personally prefer that. Overall really happy with it and would buy again.
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Reviewed in the United States on April 7, 2026
★★★★★ 4
Incredible Comfortable
Size: Queen, Color: White
These Utopia queen sheets are extremely comfortable and have a soft, smooth feel that makes sleeping on them really enjoyable. The fabric feels lightweight but still cozy, and they fit the mattress well without slipping off or bunching up. They also wash easily and come out feeling fresh and soft, which makes them great for regular everyday use.
Overall, they’re a very comfortable, reliable sheet set that makes the bed feel clean, soft, and inviting every night while still being easy to care for.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
It’s cozy and fluffy without it being heavy or too warm.
Size: Queen, Color: White
I ordered this in the color white in the size queen and I have to say I do like it. My only worry was if it was going to be too warm and it is surprisingly very light and airy, but it still gives you that feeling of comfy, which is what I mainly wanted. Right now it is a little warmer throughout the night but every now and then where I live I tend to have to put another blanket on top of me when the weather drops at night, which is annoying however, with this, it provides enough warmth without it being so heavy on you.
I have to say for the price I can’t complain.
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Reviewed in the United States on June 1, 2026