Synthetic felt strip on a roll, 3/4 inch width x 50 feet,- use to pad inside of hat to reduce hatsize for better fit.
Crazy Cat Lady's Musings: Natural Form Era Hat--a tutorial
Agnes Etherington Art Centre, E-Catalog
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20 Pieces hat reducer felt cap size reducer tape for hats caps sweatband, black and white Wide range of usage: The tape can be applied to various
Bememo 20 Pieces Hat Reducer Felt Cap Size Reducer Tape for Hats Caps Sweatband, Black and White
Felt Hat Size Reducing Tape - Judith M Millinery Supply House
Dusty Jade Gray Swiss Velvet Ribbon 1/8 1/4 3/8 5/8 7/8 1-1/2 2
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How to Make a Hat Base - Threads
Bememo 20 Pieces Hat Reducer Felt Cap Size Reducer Tape for Hats Caps Sweatband, Black and White : Tools & Home Improvement