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There are other products, which are designed to replace rubber bands and last longer, but they have downsides. Rubber bands other than military standard (Mil Spec) rubber bands may not break at the desired 40–45 pounds and can lead to bag locks. Other products may not have enough retention ability and allow the lines to “dump.” Figure 4-38  shows the various rubber bands and Tube Stoes$^{®}$. In addition to the correct rubber bands, the length of the line stows is important as well. In the past, 1-inch stows were common, but today 3-inch stows are recommended by several manufacturers. Figure 4-39  shows the comparison between the two lengths. The main point to remember is that the lines must be stowed neatly and securely. 

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## Assembly of the Main Canopy To The Harness and Container 

The rigger should be familiar with the various types of canopy releases currently in use. In skydiving, the most common release is the 3-ring release system. It was originally developed in 1976 for skydiving, but has since become the dominant release system for intentional jumping, both civilian and military. 

Riggers must be familiar with the assembly of the 3-ring release since they may have to connect new canopies to the harness and container or have to disconnect the main canopy to untangle it after landing. Shown in Figures 4-40 through  4-47 is the correct assembly sequence. The rigger must also be able to inspect the 3-ring release to determine any wear. In particular, the following areas need to be inspected: 

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