Thermoformable wool felt is made from wool and polyester (90% wool-10% polyester). It can be used as a wonderful felt for backgrounds and stitching but it contains enough polyester to enable it to be moldable.
It will retain the shape you create before you apply heat. You can stitch it and shape it first and then apply heat in an electric or microwave oven.
This is a very new fabric for those of us who just love to experiment. The possibilities of 3D is exciting.
Comes in large 50cm x 50cm squares (fat quarter) 2mm thick
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Felt square, 50cm x 50cm: $8.50 ($7.73)