President Obama’s campaign has issued increasingly urgent fundraising pleas, and the latest appears to capitalize on the record heat sweeping through the mid-Atlantic and Midwest.

“Keep cool while you’re canvassing this summer,” the Obama campaign tweeted Saturday evening. The message contained a link to a $30 Obama tank top. “Our Vote Obama Tank Top is a stylish and fun way to show your support,” the campaign says.

The campaign was pushing the tank tops as record heat combined with a loss of power following storms to create a humanitarian emergency in several states.

Obama held a call with the governors of Ohio, Virginia, Maryland, and West Virginia “to provide necessary support to state and local officials in impacted areas as they respond to these events, especially considering the power outages and the high temperatures many of the impacted areas are currently experiencing,” the White House said on Saturday.