Standard mesh straps are the most common bib strap design for good reason—they're lightweight, breathable, and work well for most riding situations. The perforated mesh fabric crosses over your upper back, letting heat escape while keeping your shorts securely in place. For road cycling, group rides, or warm-weather commuting, they're typically all you need.
The main trade-off is that mesh straps can sometimes show under a loosely fitting jersey, and they may feel less plush on your shoulders compared to wider stretch-knit designs. But for the vast majority of riders, especially those new to bib shorts, mesh straps offer proven comfort without the premium price tag of fancier options.
Consider upgrading to stretch-knit straps only if you're doing very long distances and notice shoulder pressure, or to an integrated back panel if you want lower back support and ride in cooler conditions.