t-shirt bag
n.— «There is now a push both at state and local levels to minimize the use of these plastic grocery bags or what the industry calls “t-shirt bags.” “It sticks to everything. In the garbage stream, in the recycling stream, in the litter stream. It’s hard to manage it. It’s hard to get the bags recycled.”» —“New Plastic Bag Recycling Law Takes Effect” by Dana Howard News10.net (Sacramento, California) July 27, 2007. (source: Double-Tongued Dictionary)