Stadiums, aluminum fishing-boats, and rocky campgrounds are not very kind to your behind. But, if you bring along the Therm-a-Rest Trail Seat, you can add 1. 5 inches of cushioning goodness to your sitting surface. Simply pull the compact Trail Seat cushion out of your backpack and watch it self-inflate. When you're ready to move along, just roll up the trail seat and secure it with the attached bungee closure for easy packing.