A case for an optical instrument is provided. The case has a body with a bottom and two pairs of oppositely disposed side walls connected to the body forming a cavity. The case also includes a lid having a top cover and two pairs of oppositely disposed side portions, each of which corresponds with and overlaps a corresponding side wall of the body when the lid is in a closed position. A first pair of the two pairs of side walls each includes an elastic chord which connects the given side wall to the corresponding side portion of the lid.

A handle fastener for a personal bag having two or more handles includes a body having a top and a bottom, a first arm and a second arm, and a ring. The first arm is coupled to the bottom of the body and pivotally coupled to the second arm to selectively grasp one or both of the handles of the personal bag for coupling the handles together. The ring is slidably coupled to the second arm and configured to selectively attach to the personal bag.

A binder device including a body having a first cover and a second cover directly or indirectly pivotally coupled together and at least partially defining an inner compartment therebetween. The body further includes a binding mechanism positioned in the inner compartment, a first body securing device coupled to the body, and a second body securing device coupled to the body. The binder device includes a strap including first and second strap segments. The strap is movable between a first configuration wherein the first and second strap segments are releasably coupled together to form a continuous strap that is wearable over a shoulder of a user, and a second configuration wherein the first strap segment is releasably coupled the first body securing device and the second strap segment is releasably coupled to the second body securing device such that the first and second strap segments each at least partially defines a loop. Each loop is shaped and configured to receive an arm of a user therethrough such that the binder device is wearable on a back of the user in the manner of a backpack. Each strap segment is configured to be releasably coupled to only one of the first or second body securing devices.

A containment device that converts between three different forms and includes a multilayer base. The forms include: 1) a mat or work surface that has a raised lip or edge structure that contains items on the mat or work surface; 2) a small volume bag or flexible container for holding the items inside, where the lip is gathered or compacted, e.g., by a drawstring, to form an annulus from the lip; and 3) a larger-volume, cylindrical-shaped bag, which may be used as a shopping bag. The cylindrical-shaped bag may be stored between the layers of the base when the device is in the mat configuration or the drawstring bag configuration, and the lip may be stored between the layers of the base when the device is in the cylindrical-shaped bag configuration.

A reconfigurable waterproof bag is defined by a plurality of material surfaces extending in three dimensions, a strap for carrying the bag, and one or plurality of strap guide(s) into which the strap is disposed and through which the strap may be moved, the strap guide extending within or without the bag from any one of the plurality of surfaces to any other one of the plurality of material surfaces in three dimensional space without limitation to define a geometry of a strap path and coupling of the strap to the bag so that the bag is reconfigurable in a plurality of different carrying modes.

A convertible, reusable bag includes a first bag wall; a first side panel; a second side panel; a second bag wall aligned and joined to the first bag wall by the first side panel and the second side panel at a first heat sealed and/or sewn side edge, a second heat sealed and/or sewn side edge, respectively; a bag bottom comprising a substantially planar, foldable surface, the first and the second bag walls, the first and the second side panels, and the bottom formed of a single sheet and together arranged to form a bag defining an opening at a top thereof; a handle attached to a lower portion of the first wall at a first end, and an upper portion of the second wall at the second end; a transverse panel heat-sealed and/or sewn to the upper portion of the first wall and configured to include a gap in the seal that forms a loop through which the handle is slidable.

A hard-sided backpack is provided having shoulder straps allowing the backpack to be carried on both shoulders of a user. The hard-sided backpack may have multiple features to enhance versatility and operation, including an insulated liner for operation as a cooler, a speaker to provide entertainment, a rigid cover for use as a seat, and the like.

Exemplary embodiments include a mechanism that provides a systemized way to attach straps to bags that provides for versatility in attachment of straps for both positioning on the bag and for modifying the length of the straps. These straps may be used as both handles and shoulder straps for the bag through different attachment configurations allowing for the bag to be worn (and used as) as one or more different types of bags (e.g., a purse, handbag, satchel, hobo bag, shoulder bag, crossbody bag, laptop bag, messenger bag, and/or tote bag) and a backpack.

The present invention relates to a bag usable as knee guards and, more specifically, to a bag usable as knee guards, which can retain heat or prevent damage to knees by surrounding the knees according to the needs of a user and can also be used as a bag. The subject matter of the present invention is a bag usable as knee guards, comprising: a first body which has one side open so as to form an accommodating space therein and surrounds a knee of a user with the knee bent; a second body which is formed so as to correspond to the first body and surrounds the other knee of the user with the knee bent; and a coupling means for coupling the open parts of the first and second bodies so as to form a bag shape, wherein: the first body has a cut part which can be opened and closed by a locking mechanism, and a storage pocket is formed inside the first body so as to communicate with the cut part, so that an article can be stored in the storage pocket by the locking mechanism even if the first and second bodies are uncoupled; each of the first and second bodies has connecting means for fixation formed at either end thereof so as to prevent detachment after being wrapped around the knees of the user; and the cross sections of the respective first and second bodies are in a triangular shape, so that the cross sections form a square shape when the first and second bodies are coupled to one another.

A binder device including a body having a first cover and a second cover directly or indirectly pivotally coupled together and at least partially defining an inner compartment therebetween. The body further includes a binding mechanism positioned in the inner compartment, a first body securing device coupled to the body, and a second body securing device coupled to the body. The binder device includes a strap including first and second strap segments. The strap is movable between a first configuration wherein the first and second strap segments are releasably coupled together to form a continuous strap that is wearable over a shoulder of a user, and a second configuration wherein the first strap segment is releasably coupled the first body securing device and the second strap segment is releasably coupled to the second body securing device such that the first and second strap segments each at least partially defines a loop. Each loop is shaped and configured to receive an arm of a user therethrough such that the binder device is wearable on a back of the user in the manner of a backpack. Each strap segment is configured to be releasably coupled to only one of the first or second body securing devices.