What the thread found

• The Zephyr vest can accommodate heavier arms and sleds beyond its rated capacity, but will flex more noticeably under increased load.
• Adding crossback straps to a Zephyr vest improves side-to-side stability and can help support heavier payloads.
• Operating a Zephyr vest significantly beyond its rated capacity risks breaking the plastic waistband, potentially causing sudden weight redistribution that could injure the wearer.
• The Exovest is a more robust alternative that provides future-proofing for upgrades to heavier arms and sleds without capacity concerns.
• The Exovest requires proper fitting and has a different walking technique than traditional vests, as it accommodates natural pelvic motion through pivot points rather than maintaining a level pelvis.

Depends on

• One incident was witnessed involving a waistband failure, but the frequency and generalizability of this failure mode are unclear.
• The discussion does not provide specific compatibility information for all combinations of arms and sleds mentioned.
• Crossback strap attachment methods and sourcing are not detailed in the thread.

Gear in this thread

Zephyrcatalog, G-70Xcatalog

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