Sternum strap
Overview
A sternum strap is an adjustable buckle across the chest that connects a backpack’s shoulder straps to improve fit, stability, and load distribution.
Key points
- Reduces shoulder strap separation and improves balance.
- Helps stabilize the pack on uneven terrain.
- Adjustable in height to avoid discomfort or restricted breathing.
- Prevents shoulder straps from sliding outward under load.
- Common on most modern backpacks.
- May include whistle buckles for safety.
Details
Sternum straps act as chest-level stabilizers, pulling shoulder straps inward to prevent them from sliding toward the arms. This improves comfort and balance, particularly on rough or steep terrain.
Many sternum straps slide along a rail or webbing ladder to accommodate chest height and torso differences. Some include emergency whistles integrated into the buckle as a backup signaling device.
Proper adjustment involves securing the strap snugly without restricting breathing.
Related topics
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