Thermarest slacker single hammock slack off in style and comfort with our slacker hammock product details slack off in style with a uniquely soft polyester fabric that feels great next to your skin and offers a subtle yet functional stretch that eliminates the pressure points of nylon it stuffs into its own attached pocket that doubles as a place to stash a book or tablet right before you nod off for your saturday siesta available in both single and double sizes soft 100 ripstop