Called Heatswell, this innovative sleeve by engineer Scott Amron expands when the coffee cup is filled with a hot liquid, eventually leading to an embossed Starbuck’s logo. Continue reading to see it in-action.

[via Neatorama]

Called Heatswell, this innovative sleeve by engineer Scott Amron expands when the coffee cup is filled with a hot liquid, eventually leading to an embossed Starbuck’s logo. Continue reading to see it in-action.

[via Neatorama]