Lezyne 87 g or less Tool Kit Bicycle Seat Bags
About Lezyne - "Lezyne's mission is to create the most advanced and beautiful cycling products, ever. Bicycle hand pumps, floor pumps, digital pumps, shock pumps, multi-tools, tire repair, bags, bottle cages, CO2 inflators, tool kits, saddle bags, organizers, shop tools and more."
Some bags include tool kits. The tool kits usually contain tools for in-ride fixes, like patch kits and tire levers.