A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. In both such first and second modes, the frame of the tricycle is configured to rotatably support the rear wheels and configured to support the head tube at a distance from the rear wheels such that a distance between the head tube and rear wheels need not necessarily be changed even when the front wheel axis location is changed from one mode to another.

A mobile storage device comprises an exterior frame and an interior storage area within the exterior frame. The exterior frame comprises a seat for sitting on when the mobile storage device is not being rolled or moved. In some embodiments, the seat is movable from a closed position to an open position to access the interior storage frame. A flexible storage bag comprising one or more pockets is able be configured to fit within the interior storage area. In some embodiments, the exterior frame is adjustable to adjust a size of the interior storage area. In some embodiments, the exterior frame is collapsible for storing the mobile storage device.

A bicycle trailer has a frame with a hitch portion that comprises first and second yoke arms with respective first end and second end portions. Skewer engagement latches can be coupled to the second end portions of the yoke arms. The skewer engagement latches can have stops that pivot between stop open and closed positions. In the stop open positions, respective end portions of a bicycle skewer can inserted into or separated from the latches. In the stop closed positions, respective end portions of the bicycle skewer, if positioned in respective latches, are retained coupled to the yoke arms by the latches. The stops are moved between open and closed positions by an actuator, such as by respective cable portions attached to the stop portions. Desirably the actuator simultaneously moves the stops between the open and closed positions. The latches can have skewer engagement surfaces that are least in part spherical.

A trailer system includes a chassis defining an axis and having a first section and a second section removably attached to the first section. A wheel assembly is attached to the first section that includes a single wheel and a lift mechanism arranged to raise and lower the chassis relative to the single wheel.

Embodiments include strollers having removable seats. An example stroller may include rear wheels, front wheels, and a frame including a handle portion, a rear wheel support portion, a front wheel support portion and a folding mechanism connecting the front wheel support portion and the handle portion in both an unfolded configuration and in a folded configuration. The frame may include a stroller seat support portion positioned at a first vertical position adjacent the handle portion, and a front seat attachment configured for attachment to the front wheel support portion at a second vertical position substantially lower than the first vertical position. The front seat attachment may be configured to support the front stroller seat substantially over the front wheels so that a center of gravity of the stroller system is between the front wheels and the rear wheels.

A folding bicycle trailer that converts between a bicycle trailer mode, a stroller mode, and a folded mode. The trailer has a frame having a first and second side frame assemblies, and a floor assembly. Each side frame assembly has a front wheel and a rear wheel. The front wheels are removed from the frame in the bicycle trailer mode, and are connected to the frame in the stroller and folded modes. A connection arm removably connects to a bicycle in bicycle trailer mode. The connection arm is removable in the stroller and folded modes, but can be connected to the trailer in a second position in those modes. The trailer has a removable push bar for stroller mode. The first and second side frame assemblies remain vertical but move closer to one another in the folded mode.

A tricycle may be operable between a first mode of operation steerable by a tricycle rider, and a second mode of operation steerable by an individual pushing the tricycle. A rider handle, in the first mode, may be configured to be rotationally coupled with the stem in a manner permitting a tricycle rider to exert forces on the rider handle and thereby turn the fork, and the rider handle in the second mode, being configured to be rotationally uncoupled from the stem, preventing forces on the rider handle from turning the fork. At least one rotation restricted may be included for preventing the front wheel from turning to a position where the front wheel axis leads the fork axis, and for maintaining the front wheel axis in a position trailing the fork axis both when the tricycle is propelled by a tricycle rider in the first mode and when the tricycle is pushed from behind in the second mode.

A child transport device system, such as a pram or child trailer or jogger system, for use in different modes, in particular for pushing or pulling transport of at least one child, comprising a child receiving device for receiving the at least one child, which is adjustable in at least two configurations, and at least one connection device, which is connectable to the child receiving device in at least one of the configurations of the child receiving device and is not connectable or is connectable only in an impeded manner to the child receiving device in at least one further configuration of the child receiving device.

A traction transmission device including a traction bar for transmitting a traction force of a traction device, such as a traction harness for a running person or a trailer coupling of a vehicle, to a child trailer, comprising a first portion having a first end and a second end, a second section having a first end and a second end, wherein one of the first ends is connected or connectable to the child trailer and another of the first ends is connected or connectable to the traction device, wherein the second ends are connected via a connecting means, such as a joint, in such a way that a relative movement, such as a relative pivoting movement, is enabled between the second ends in a state of use of the traction transmission device.

An insulated container configured to store cold consumables is disclosed. The container has a body having a curved track wrapping around the body and upon which the body is able to be rolled. The body has an insulated wall encompassing a cavity configured to hold at least ice and consumables.