A soft core bottle includes a bottle housing and a liner. The liner includes a first bottle opening and a first bottle body. The first bottle body is made of a soft material. The bottle housing is made of a hard material. The liner is attached to the bottle housing via the first bottle opening in an assembled state.

A rollable heat preservation cup, comprising a cup cover, a fixing ring, a bottleneck, and a two-layered cup body which further comprises an inner-layer cup body and an outer-layer cup body, wherein the two-layered cup body is a rollable and soft cup body, wherein a heat-preserving material layer is disposed between the inner-layer cup body and the outer-layer cup body, wherein a fixing ring is disposed between the bottleneck and the cup body, wherein the upper end part of the two-layered cup body is firmly embedded into an inner space formed by the fixing ring and the bottleneck.

A wearable fluid reservoir configured to contain liquids includes a swinging suppressing mechanism to inhibit horizontal and vertical swinging of a reservoir main body in relation to a hydration pack in which the reservoir main body is inserted. The pack includes a connecting mechanism that mates with the swinging suppressing mechanism to form a detachable, yet secure fit between the reservoir and the pack. A sipping tube is coupled to the reservoir main body.

A cylindrical bottle which collapses along helical groove, ridge and connecting rings along its sidewall. When inward force is applied along the bottle's vertical axis, the helical groove rings and connecting rings fold under the ridge rings and remain substantially “locked” under the ridge rings, thereby causing the sidewall to collapse and remain collapsed until sufficient outward force is applied. When sufficient outward force is applied along its vertical axis, the bottle extends as the distance between its helical groove rings and ridge rings lengthens. Due to the diamond-shaped cross-section of the connecting rings, in conjunction with the silicone composition of the bottle's body, the collapsing and extension of the bottle occur in sequential segments, creating a unique, playful sound and an amusing worm-like movement.

A stretchable bottle container for usage as an umbrella accessory, or a packaging and storage container. The stretchable bottle container comprises: a stretchable bottle body (1), a bottle cap (2), and hanging accessories (3) for portability purposes. The opening of the stretchable bottle body (1) is connected with the bottle cap (2) through a detachable tightening seal connection which is airtight and waterproof. The body (1) of the stretchable bottle is a cylinder which has one closed end and one open end, wherein the wall of the cylinder contains stretchable wavy structures. The size difference between the diameters of the opening of the bottle and that of the body (1) is less than 10%. The opening of the bottle body is soft and deformable under the pressure of finger squeezes.

Hanging accessories (3) for portable purposes are connectable with the bottle cap (2) through a sectional structure which is capable of undertaking repeated detachments and re-attachments or a hanging carabiner which has open and shut configurations. The present utility invention provides a stretchable bottle container with technical advantages of having a soft and wide mouth opening which is deformable under finger squeezes, compactness in stock volume, high portability, good compatibility for different sizes and a waterproof and airtight insulation.

A container having enhanced wall integrity is provided that includes a sidewall having a polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. Alternatively, the alignment structure can protrude from the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the valleys of the second container in order to orient the containers as they are stacked.

A container having enhanced wall integrity is provided that includes a sidewall having a polygonal cross-sectional shape and an alignment structure formed therein. The alignment structure is adapted for orienting the container with respect to a second container such that the panel sections of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. Alternatively, the alignment structure can protrude from the sidewall to form peaks and valleys along an inner surface of the container. The peaks include first and second faces sloping in opposite directions designed to direct corners of the first container's sidewall toward the valleys of the second container in order to orient the containers as they are stacked.

A collapsible jug includes an upper member defining an opening and having a spout at a first side of the upper member. The jug has a lower member defining a base, and a collapsible side wall extending between the upper and lower members. The jug has a link that has a first end pivotally attached to the upper member at a second side of the upper member. The container is alterable between a collapsed configuration wherein the side wall is collapsed and a second end of the link is releasably attached to the spout such that the lower member is releasably retained between the link and the upper member and an in-use configuration wherein the side wall is extended and the second end of the link is releasably attached to the lower member such that the upper and lower members are releasably retained in a spaced apart configuration.

A backpack includes: a body including a front panel and a rear panel; a shoulder strap attached to the body and having an adjustable length; and a retention mechanism attached to the body and movable between a first position and a second position, in the first position the retention mechanism being disposed to define a compartment to hold an object and to inhibit first motion of the object toward a bottom of the backpack, to inhibit second motion of the object toward a right side of the backpack, to inhibit third motion of the object toward a left side of the backpack, and to inhibit fourth motion of the object away from the rear panel over a length of the retention mechanism, in the second position the retention mechanism providing an opening to the compartment, the opening extending a majority of the length of the retention mechanism.

A backpack includes: a body including a front panel and a rear panel; a shoulder strap attached to the body and having an adjustable length; and a retention mechanism attached to the body and movable between a first position and a second position, in the first position the retention mechanism being disposed to define a compartment to hold an object and to inhibit first motion of the object toward a bottom of the backpack, to inhibit second motion of the object toward a right side of the backpack, to inhibit third motion of the object toward a left side of the backpack, and to inhibit fourth motion of the object away from the rear panel over a length of the retention mechanism, in the second position the retention mechanism providing an opening to the compartment, the opening extending a majority of the length of the retention mechanism.