I strive to make the most comfortable & best fitting face mask possible! All masks are made with two layers of 100% cotton, the selected fabric pattern on the outside & a matching solid on the inside. I try to only purchase good quality cotton, nothing too thin. I am unable to provide thread count for the various cottons, sorry. WASHING & CARE INSTRUCTIONS: hand wash, lay flat to dry to avoid shrinking & wrinkles SIZING INFORMATION: ALL SIZES have adjustable & comfortable ear loops. Most kids prefer a mask without a nose wire. Please make sure to select the size option with a nose wire if desired. With the adjustable ear loops you are able to get a good fit with two sizes often. The adjustability really does make a huge difference! Adults - Most women prefer the regular adult size. Some petite women prefer the large kid size with the nose wire. Slim men or men with no facial hair also seem to prefer the regular adult size. Larger men or men with lots of facial hair prefer the large adult size. Kids - I have the kids sizes listed based off ages. If your child is larger & close to sizing up anyways, size up! I do not feel that measuring is necessary as everyone measures different, but here are some figures if you feel the need to measure. When measuring, make sure to keep the measuring tape loose as you do not want the mask skin tight. Measure from the top of your nose wear the mask should rest to the under your chin when the bottom should rest. These masks are made to fully over the chin. The measurement of the front curve of the mask (from the top of the nose to under your chin) are as follows: S Kid - 5" M Kid - 5.5" L Kid - 6" Adult - 6.5" L Adult - 7" Back To School, Teacher Face Mask - Adult, Child, Kid, Adjustable, Nose Wire, Cotton, Washable, Handmade, Reusable