Sympl Commuter Backpack

“A sternum strap is designed to keep the shoulder straps from sliding. It should not hold any weight, it is only there to prevent the shoulder straps from sliding back while wearing the backpack. It is most useful for people with smaller shoulders, and for very large backpacking packs. I think they’re completely unnecessary for a 20 liter commuter bag. That said, they do add another level of security while bike commuting, and when traveling internationally, as a connected shoulder strap makes a bag harder to grab and run. Or shift around when biking. What bothers me most about sternum straps is when people wear them below their chest, like a bra strap. There’s a commercial out now in the US for some overpriced medication, featuring a guy wearing a sternum straps like a bra. Drives me insane! Lastly, I’m a little concerned you’re working with a designer who sounds like they have zero experience with backpacks.”