For those who have been wondering, here is the sandwich wrapper.
This handy little thing is made to replace one-time use plastic baggies. You can wrap your sandwich inside, and take it to school or work. When you’re ready to eat, unwrap it and you’ve got a placemat for your sandwich! The outer layer is made of an organic cotton/bamboo blend from Robert Kaufman fabrics. The inner layer is made of PUL. This is a polyester fabric that has been laminated on the backside for waterproofing. The PUL keeps the air out and moisture or grease in. You don’t have to worry about mayonaise or mustard leaking through to the cotton/bamboo fabric on the outside. I am not sure if I’ll stick with three button holes or go down to two. I did multiple because not every sandwich is the same size.