A convertible shoulder bag and backpack includes: (a) a bag body defining front, back, top, bottom, first side, and second side panels; and (b) a strap defining first and second portions thereof extending between first and second pairs of connection points for connecting the first and second portions to the bag body, respectively. An interconnecting portion slidably extends between a pair of diagonally opposing connection points such that slidably increasing the length of the first portion decreases the length of the second portion and vice versa, the strap being configured to enable the convertible shoulder bag and backpack to be converted between a shoulder-bag configuration and a backpack configuration without disconnecting or reconnecting the strap. The strap may include a retractable hip belt and/or securing strap. Additionally, a tote handle may be coupled to the first and/or second portion by a length-multiplying interconnecting portion.

The present invention discloses a multifunctional open-close type tool kit, which comprises an upper kit body, a lower kit body and a computer bag. The upper kit body is detachably arranged above the lower kit body, and the computer bag is arranged on a rear side of the upper kit body and the lower kit body and is detachably connected with the upper kit body and the lower kit body. The present invention has at least the following forms through independent disassembly of the three: the upper or lower kit body is used only, the computer bag is used only, the upper kit body and the lower kit body are connected and used, the lower kit body and the computer bag are used, and the upper kit body, the lower kit body and the computer bag are used together. Through detachable connection, the need of free combined use for users in different occasions can be satisfied.

Embodiments of a strap assembly system for a golf bag are described herein. The strap assembly system can be converted between a single-strap configuration or a double-strap configuration. The strap assembly system comprises a first strap, a second strap, and a back puck. The back puck comprises first and second attachment openings for securing the first strap. The back puck further comprises first and second side openings that define a linear pathway and are configured to receive the second strap. The second strap can move freely along the linear pathway.

A rucksack and shoulder bag has a storage bin with two opposite sides; a single continuous strap encircling the bin, the strap ends being attached to the storage bin on opposite sides at predefined attachment points. At least four loops are attached to the storage bin. The strap is led through each of the loops such that the strap may slide through the loops. The attachment points and loops are distributed such that the bag has at least two configurations: a first configuration wherein one of the attachment points and three of the loops define carrying points for two shoulder straps as a rucksack, and a second configuration wherein the strap extends diagonally across a top part of the storage bin between two of the loops located on the opposite sides, wherein the bag may be carried with the strap extending diagonally across the top part as a shoulder bag.

A lid of a backpack is disclosed having a compartment in which a standalone daysack having a shoulder strap is arranged. The compartment is transformable from a first state in which the lid is mountable to a backpack to a second state in which the standalone daysack is usable independently from the backpack. In the first state, the standalone daysack and its shoulder strap are stored within the compartment. In the second state, the compartment is inverted by turning the inside out so that the shoulder strap is usable for carrying the standalone daysack.

Modular bag system having one or more base bags and a plurality of attachable gear sets. In some configurations, a base bag or a gear set includes a pocket flap that easily moves from an external orientation to an internal orientation to permit access to the pocket. In some configurations, a bag has a strap arrangement that converts from a two-strap arrangement to a single-strap arrangement.

A reconfigurable backpack with enhanced safety features uses a base panel, a folding line, a storage compartment, a shoulder strap, and a bag-securing mechanism. The base panel is a flexible piece of material that has a first edge and a second edge which are located on opposite ends of the base panel. The folding line is a line of demarcation that is integrated into the base panel and indicates where the base panel should be folded to be correctly reconfigured. The storage compartment is a sealable pouch that is connected to the base panel and used to carry personal items. The shoulder strap is connected in between the first edge and the second edge so that the user is able to support the base panel and the storage compartment on the shoulders. The bag-securing mechanism maintains the base panel in a folded configuration when engaged.

A convertible carrying device in which the straps may be selectively secured to configure the device as a backpack or as a handbag. In the handbag configurations, the selective securing of the straps effectuates differing functional strap lengths enabling the handbag to be carried by hand, over a shoulder, or cross body. The arrangement of the connection points on the bag and the straps applies directional forces to the placket surrounding the opening that make it adopt a valley shape when in a handbag configuration and a planar orientation when in the backpack configuration.

A duffel bag can be reversibly converted to a cross-over bag by restricting the storage volume of the bag at one end. Optionally, a carrying strap may be adjusted from a central anchor to an outer anchor to facilitate draping the carrying strap over a shoulder.

Embodiments of a strap assembly system for a golf bag are described herein. The strap assembly system can be converted between a single-strap configuration or a double-strap configuration. The strap assembly system comprises a first strap, a second strap, and a back puck. The back puck comprises first and second attachment openings for securing the first strap. The back puck further comprises first and second side openings that define a linear pathway and are configured to receive the second strap. The second strap can move freely along the linear pathway.