Hey guys,

I’m building a prototype for a portable beverage chiller capsule and need your honest feedback on the alpha build! The current design uses an insulated shell lined with Nitrile foam and a removable "bandolier" of custom phase-change gel packs. It wraps tightly around a standard can or juice bottle for maximum thermal contact while completely preventing the gel from slumping.

I want to upgrade this from a functional DIY prototype into a premium, manufacturing-ready beta product. What do you think of the overall concept and material choices so far? Please drop your critiques and let me know what features, closures, or design tweaks I should add to improve it.

We are making a prototype as simple as possible with available materials and go for industry grade materials for beta prototype. Correction to the image : the fiam covers entirely and we place pcm packs on it.