Hydration pack

Abstract

A hydration pack may comprise a main body formed from a warp-knit fabric. The main body may have a three-dimensional shape. The three-dimensional shape may define a cavity configured to store liquid. A portion of the main body may be folded and coupled with another portion of the main body. The folded portions may define a multilayer structure. The hydration pack may comprise an aperture configured to allow access to the liquid stored in the cavity. The hydration pack may comprise a material configured to create a compression gradient in the cavity. The hydration pack may comprise a section comprising a material having a higher modulus of elasticity than a material of another section of the hydration pack.

What is claimed: 
     
         1 . A hydration pack comprising:
 a main body having a three-dimensional shape defining at least one cavity, wherein a first portion of the main body is folded to be disposed adjacent a second portion of the main body thereby defining a multilayer structure comprising at least two layers, and wherein the main body is formed from a knitted material;
 a coupling mechanism configured to couple the first portion to the second portion; and 
 an aperture disposed through the main body, thereby allowing access to the at least one cavity, wherein the at least one cavity is configured to hold liquid. 
   
     
     
         2 . The hydration pack of  claim 1 , wherein the knitted material comprises a plurality of rows of looped structures, wherein the plurality of rows comprises at least a first row and a second row adjacent to the first row, wherein at least a subset of loop structures of the first row are interlocked with at least one loop structure of the second row, and wherein the first portion and the second portion are joined by at least a subset of the loop structures of the first row and the at least one loop structure of the second row. 
     
     
         3 . The hydration pack of  claim 1 , wherein the hydration pack is configured to be worn on one or more of an abdomen of a user or a back of a user. 
     
     
         4 . The hydration pack of  claim 1 , wherein the hydration pack comprises at least one of a vest, a backpack, or a fanny pack. 
     
     
         5 . The hydration pack of  claim 1 , wherein the multilayer structure comprises a four-layer structure. 
     
     
         6 . The hydration pack of  claim 1 , wherein the knitted material comprises a polyester. 
     
     
         7 . The hydration pack of  claim 1 , wherein a first portion of the hydration pack comprises a first material and a second portion of the hydration pack comprises a second material different than the first material; and
 wherein the first material has a higher modulus of elasticity than the second material.   
     
     
         8 . The hydration pack of  claim 1 , wherein at least a portion of the hydration pack comprises a mesh material. 
     
     
         9 . The hydration pack of  claim 1 , further comprising a plurality of pockets. 
     
     
         10 . The hydration pack of  claim 1 , wherein the main body comprises a material configured to cause a compression gradient in the cavity. 
     
     
         11 . A method of making a hydration pack comprising:
 knitting a main body having a three-dimensional shape defining at least one cavity;   folding a first portion of the main body to be disposed adjacent a second portion of the main body thereby defining a multilayer structure comprising at least two layers;   coupling the first portion to the second portion; and   closing a portion of an end of the main body to define an aperture allowing access to the at least one cavity, wherein the at least one cavity is configured to hold liquid.   
     
     
         12 . The method of  claim 11 , wherein the coupling the first portion to the second portion comprises at least one of sewing or ultrasonically welding the first portion to the second portion. 
     
     
         13 . The method of  claim 11 , wherein the multilayer structure comprises a four-layer structure. 
     
     
         14 . The method of  claim 11 , wherein the knitting the main body comprises warp knitting the main body. 
     
     
         15 . The method of  claim 11 , wherein the main body comprises a polyester. 
     
     
         16 . The method of  claim 11 , wherein a first portion of the hydration pack comprises a first material and a second portion of the hydration pack comprises a second material different than the first material, and wherein the first material has a higher modulus of elasticity than the second material. 
     
     
         17 . The method of  claim 11 , further comprising partitioning the cavity, wherein the partitioning the cavity comprises at least one of sewing, gluing, or welding a portion of the main body. 
     
     
         18 . A product formed by:
 knitting a main body having a three-dimensional shape defining at least one cavity;   folding a first portion of the main body to be disposed adjacent a second portion of the main body thereby defining a multilayer structure comprising at least two layers; and   coupling the first portion to the second portion;   wherein an aperture goes through the main body, thereby allowing access to the at least one cavity, and wherein the at least one cavity is configured to hold liquid.   
     
     
         19 . The product of  claim 18 , wherein the coupling the first portion to the second portion comprises at least one of sewing or ultrasonically welding the first portion to the second portion, and, wherein the knitting the main body comprises warp knitting the main body. 
     
     
         20 . The product of  claim 18 , wherein a first portion of the main body comprises a first material and a second portion of the main body comprises a second material different than the first material, and wherein the first material has a higher modulus of elasticity than the second material.