"Oh!" Sookie nods in understanding, squinting to try to put into words what she can already imagine from Mathias' description. "So it's like... holding the warmer water next to your body. Keeping it in the suit. Like when you step into a pool and feel warmer after the first few seconds, then cold again when you start swimming through it." She presses her hand curiously to her lips, wondering what her tolerance is for that. The water deeper below must be a lot colder than the bay, she thinks, as she's pretty sure that it's the sun doing all of the warming, and those rays don't travel too far.

"I might need to test it out with and without," she concludes with a slight flinch. "I'm so clueless with this stuff, and even though we've got beaches all around us, I spend more time sunbathing than swimming. Mostly 'cause I get so lazy about reapplying sunblock."