Pro-Shot Cleaning Patches are 100% cotton flannel. These patches are designed to absorb foreign material and residue, and carry it through the bore with the least amount of abrasive contact to the barrel's rifling.
Dimensions:

• 17 to 22 Caliber: 3/4" x 3/4" Square
• 22 to 270 Caliber: 1" Round; 1-1/8"x 1-1/8" Square
• 6mm to 30 Caliber: 1-1/2" Round
• 6mm to 7mm Caliber: 1-3/8" Square
• 270 to 38 Caliber: 2" Round
• 7mm to 38 Caliber: 1-3/4" x 1-3/4" Square
• 38 to 45 Caliber, 20 Gauge, and 410 Bore: 2-1/4" x 2-1/4" Square
• 45 Caliber, 12 Gauge, 16 Gauge: 3" x 3" Square