Natural Cotton Batting with scrim for strength and durability. Made of Ultra Clean Cotton fibers. Quilters and crafters trust and love natural cotton due to the time proven qualities it lends to all projects. Cotton shrinks 3-5% (pre-soak as needed). The lightweight and soft stabilizing scrim binder provides strength and allows for a stitching area of up to 8-10" apart. Loft: 1/16", Shrinkage: 3-5%. Stitch Distance: 8-10″. Do NOT use in projects intended for the microwave.