| 摘要 |
A bear proof, lightweight, food sack is made from puncture and tear resistant fabric (10) sewn with high strength thread (24) and secured with an abrasion resistant cord (12). The food sack is closed by tightening the cord (12), which encircles the top of the sack in a hem (14) and emerges through a grommet (16). The cord (12) is secured by means of a cord lock (18) and an overhand knot (20). Excess cord (12) is then tied with a secure knot (22) to a fixed object, such as a tree, so that the sack cannot be removed by a bear.
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