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UnderCover Flex vs Ultra Flex Bed Cover Comparison

UnderCover brings us the Flex and Ultra Flex tonneau covers. Both have many benefits that vary depending on utility. Our comparison will help you decide which cover best fits your lifestyle.

Shared Features

  • SecureSecure Locks with your truck's tailgate lock.
  • Water ResistantWater Resistant Seals around the bed to prevent most water from entering.
  • Accessories CompatibleAccessories Compatible Works with wheel well tool boxes and cargo dividers.
  • Easy InstallationEasy Installation No drilling required.
  • Made in the USAMade in the USA American-made quality.
Under Panel Material
Under Panel Material

Panel undersides are textured FRP (fiberglass reinforced polymer).

Under Panel Material
Under Panel Material

Panel undersides are lined with a carpet-like material to protect valuables against damage like scratches, dents, and dings.

Fiberglass Reinforced Panels
Fiberglass Reinforced Panels

Keeps the cover cool to touch so you don't get burned on hot days. The panels are also UV resistant and won't fade easily.

Aluminum Construction
Aluminum Construction

Panels are durable and lightweight, making the cover easy to fold open and closed. The black powder-coat finish gives UV protection and keeps the cover looking great.

Low-Profile Design
Low-Profile Design

Flush with bed rails, this cover doesn't affect gas mileage.

Ultra Low Profile
Ultra Low Profile

Adds sleek styling without affecting gas mileage.

300 Lb Weight Capacity
300 Lb Weight Capacity

Holds up to 300 pounds of evenly-distributed weight.

400 LB Weight Capacity
400 LB Weight Capacity

Holds up to 400 pounds of evenly-distributed weight.

Three Year Warranty
Three Year Warranty

The Flex is backed by a three-year warranty against defects in materials and workmanship.

Five-Year Warranty
Five-Year Warranty

The Ultra Flex is backed by a five-year warranty against defects in materials and workmanship.

Other Accessories
Other Accessories

The Flex does not come with any additional products.

Other Accessories
Other Accessories

The Ultra Flex comes with an LED bed light.

UnderCover Flex Product Review Video
UnderCover Flex Product Review Video
UnderCover Flex Tonneau Cover Product Review (01:14)
UnderCover Ultra Flex Tonneau Cover Product Review Video
UnderCover Ultra Flex Tonneau Cover Product Review Video
UnderCover Ultra Flex tonneau cover product review (01:56)

If you need help measuring your truck bed, check out our helpful article or contact our product experts.