a TikTok user who goes by @wetrashtalk declared as she revealed one of the Stand-Up Collapsable Grocery Totes. “This stand-up collapsible bag is practical and functional, and it’s only $3.99.

Someone commented that commercial containers are molded in the collapsed ... It’s worth a look into the science of creating collapsible walls.

Turns out, it’s really, really hard — collapsible containers have rigid guidelines. Just ask [Eric Strebel], who failed dozens of times before finally getting it right (video, embedded below).

Would a narrow, cylindrical tote work best with my frame, or would a wide, collapsible leather bag feel more balanced? Then, there was the material to consider. I love a classic buffed calfskin ...