The present disclosure relates to a device for assisting in the folding and rolling of a tarp. The device comprises a frame and a tarp rotator. The frame may be adapted for mounting on the edge of a flatbed trailer, for example mounted on a rub rail on the edge of the trailer. The frame includes releasable attachments for supporting the tarp rotator offset from the edge of the trailer and allowing rotation of the tarp rotator. A tarp may be prepared by producing a fan fold configuration and inserting into a receiving gap in the tarp rotator. The tarp rotator may then be rotated to wind the tarp around the tarp rotator. The tarp rotator with rolled tarp thereon may then be released from the frame and transferred to the trailer whereupon the tarp rotator is removed from the tarp, thus producing a completed rolled tarp ready for storage.

Particular embodiments may provide a tonneau system for a vehicle. The tonneau system may be movable between an extended configuration and a retracted configuration. The tonneau system may include a cover, a beam, and rails. The cover may have two side edges and a tail edge, the beam may be coupled to the tail edge of the cover, and the rails may be coupled to the side edges of the cover. In some embodiments, the beam and the rails bi-directionally tension the cover when the tonneau system is in the extended configuration.

The provided are a support mechanism and support assembly for a soft top of a truck bed. The support mechanism includes a side rail, a first folding assembly, and a second folding assembly, where the side rail is fixed to the truck bed; the first folding assembly includes a first main support frame that is rotatably provided on the side rail; a bottom end of the first main support frame is connected to a movable component; the movable component is rotatably connected to the side rail, such that the bottom end of the first main support frame is adjustable at least along a length direction of the side rail; the second folding assembly includes a second main support frame; the second main support frame is rotatably provided on the side rail; and the second folding assembly is foldable and storable above the first folding assembly.