A backpack for carrying water, the backpack comprising:
- a flexible body defining a maximum interior volume, wherein the flexible body comprises:
- an elongated piece of fabric, the fabric having a first half as measured from a first end of the fabric to a midpoint in a long axis of the fabric, the fabric having a second half as measured from a second end of the fabric to the midpoint;
- a bottom to provide sufficient support to the backpack for the backpack to be self-standing, wherein the bottom is defined by three folds forming a pleat disposed transversely across the long axis, the three folds comprising:
- a midpoint fold disposed at the midpoint;
- a first fold disposed in the first half proximal to the midpoint, the first fold defining a boundary between a front side and a first bottom portion, the first bottom portion is defined by the portion of the fabric disposed between the first fold and the midpoint fold;
- and
- a second fold disposed in the second half proximal to the midpoint, the second fold defining a boundary between a back side and a second bottom portion, the second bottom portion is defined by the portion of the fabric disposed between the second fold and the midpoint fold;
- a first semi-circular stitching affixing the first bottom portion to the front side to form a tangent ogive having a point at an edge of the fabric and being semi-circular at the crossing of the first semi-circular stitching with the long axis;
- a second semi-circular stitching affixing the second bottom portion to the back side to form a tangent ogive having a point at the edge of the fabric and being semi-circular at the crossing of the second semi-circular stitching with the long axis;
- a lower opening being disposed in a back side of the flexible body, the lower opening being located proximal to the bottom;
- a cover to selectively cover and uncover the lower opening;
- a cover fastener to releasably fasten the cover, wherein the cover fastener is a hook and loop fastener;
- an upper opening being defined by the first end of the fabric and the second end of the fabric;
- a pair of ties being disposed at opposite edges of the upper opening, the pair of ties being configured to secure a roll closure of the upper opening in response to being drawn together and tied;
- and
- a stiffening member sewn into the second end to facilitate the roll closure;
- and
- a liner comprising:
- a translucent polymer envelope being larger than the maximum interior volume;
- a valve configured to protrude through the lower opening;
- and
- an upper liner opening cooperatively aligned with the upper opening;
- and
- a pair of straps including a first strap and a second strap, each strap of the pair of straps having a first strap end being affixed on the front side about half way between the first fold and the first end of the fabric and with a right side first strap end being affixed to a right side of the long axis and a left side first strap end being affixed to a left side of the long axis, each strap having a second strap end being affixed to the back side adjacent to the second fold and with a right side second strap end being proximal to a right edge of the fabric and a left side second strap end being proximal to a left edge of the fabric, wherein the first strap end of the first strap is affixed relatively closer to the upper opening than the first strap end of the second strap;
- and
- a hoist strap having a first hoist end and a second hoist end, the first hoist being affixed to the first strap below the first strap end of the first strap and level with the first strap end of the second strap and the second hoist end being affixed to the first strap end of the second strap.