A foldable supporting device includes a linkage unit, a supporting unit and a converting unit. The supporting unit includes a main supporting member that has a first main supporting surface, and at least one auxiliary supporting member that has a first auxiliary supporting surface. The converting unit has at least one converting part that is drivable by movement of the linkage unit to convert the supporting unit between a folded state in which the first main supporting surface and the first auxiliary supporting surface cooperatively form a first angle, and an unfolded state in which the first main supporting surface and the first auxiliary supporting surface cooperatively form a second angle.

A foldable supporting device includes a linkage unit, a supporting unit and a converting unit. The supporting unit includes a main supporting member that has a first main supporting surface, and at least one auxiliary supporting member that has a first auxiliary supporting surface. The converting unit has at least one converting part that is drivable by movement of the linkage unit to convert the supporting unit between a folded state in which the first main supporting surface and the first auxiliary supporting surface cooperatively form a first angle, and an unfolded state in which the first main supporting surface and the first auxiliary supporting surface cooperatively form a second angle.

Embodiments of chair systems incorporating trekking poles include a low-back design employing fixed-length trekking poles, and a high-back design employing adjustable-length trekking poles that allow for adjusting the recline angle of the chair. The chair system generally includes a tubular frame that releasably engages a flexible seat. The tubular frame includes a front hub and a rear hub spaced one from the other by a cross bar, plus front and rear footings which stabilize the chair system on the ground or undersurface. A V-shaped upper support extending from the front hub supports and holds open the leg portion of the flexible seat, while the trekking poles are releasably engaged with and extend upwardly from the rear hub to support, and hold open and upright the back portion of the flexible seat.

Embodiments of chair systems incorporating trekking poles include a low-back design employing fixed-length trekking poles, and a high-back design employing adjustable-length trekking poles that allow for adjusting the recline angle of the chair. The chair system generally includes a tubular frame that releasably engages a flexible seat. The tubular frame includes a front hub and a rear hub spaced one from the other by a cross bar, plus front and rear footings which stabilize the chair system on the ground or undersurface. A V-shaped upper support extending from the front hub supports and holds open the leg portion of the flexible seat, while the trekking poles are releasably engaged with and extend upwardly from the rear hub to support, and hold open and upright the back portion of the flexible seat.

A convertible hiking stick includes a handle extending along a center axis and a first leg and a second leg that couple to the handle and extend along the center axis. The hiking stick is convertible into a tripod such that the first leg is in a first bore of the handle, the second leg is in a second bore of the handle, the first leg extends transverse to the second leg, and the first leg, the second leg, and the handle together support the hiking stick with respect to a surface.

A convertible hiking stick includes a handle extending along a center axis and a first leg and a second leg that couple to the handle and extend along the center axis. The hiking stick is convertible into a tripod such that the first leg is in a first bore of the handle, the second leg is in a second bore of the handle, the first leg extends transverse to the second leg, and the first leg, the second leg, and the handle together support the hiking stick with respect to a surface.

A system, such as a camping or lounging system, includes a first spreader bar and a second spreader bar. The system also includes a hammock-tent defining a first end sleeve and a second end sleeve, wherein the first spreader bar is configured to be removably inserted into the first end sleeve and the second spreader bar is configured to be removably inserted into the second end sleeve. The system also includes at least one bracket, wherein at least one of the first spreader bar and the second spreader bar is configured to be detachably coupled with the at least one bracket to form a chair framework. The system may be deployable in a hammock-tent mode or a chair mode.

A fold-out accessory rest is for securement to a trekking or ski pole or tripod leg in a folded-up position and then easily deployed by unfolding the rest for supporting a firearm, scope, camera, or other accessory. The rest includes a rest body for mounting on a pole/leg, a strap-supporting flap rotatably connected at its lower end near a lower part of the rest body, and a rest-strap rotatably connected at a proximal end near the rest-body's middle part and at a distal end to the distal end of the strap-supporting flap. When the rest-body is deployed in its folded-out position, a firearm barrel or forestock or camera telephoto lens or other accessory may be laid upon the rest-body to steady the accessory for use.

A fold-out accessory rest is for securement to a trekking or ski pole or tripod leg in a folded-up position and then easily deployed by unfolding the rest for supporting a firearm, scope, camera, or other accessory. The rest includes a rest body for mounting on a pole/leg, a strap-supporting flap rotatably connected at its lower end near a lower part of the rest body, and a rest-strap rotatably connected at a proximal end near the rest-body's middle part and at a distal end to the distal end of the strap-supporting flap. When the rest-body is deployed in its folded-out position, a firearm barrel or forestock or camera telephoto lens or other accessory may be laid upon the rest-body to steady the accessory for use.

A convertible, multi-tasking cane and a method of using the cane is disclosed. The cane includes a tubular cane body defining an internal cavity, a handle attached to a first end of the tubular cane body, and a base support attached to a second end of the tubular cane body. The handle is converts to a seat upon actuation of a seat release mechanism. The cane further includes an umbrella, a rechargeable battery located in the internal cavity and above the second end of the tubular cane body, and a tubular insulating structure overlapping a portion of the tubular cane body. The tubular insulating structure houses a plurality of electronic devices.