PKG(100) 2" X 4" Heat Seal Iron On Canvas Patch Iron-On Canvas These here are made for repairing tents after critters tried to get inside or somebody bent over too fast with a machete in his belt. Iron these 4" x 2" off-white canvas strips, shiny side down, over the hole and yer tent's like new, almost. Pants too, if ya got off-white canvas britches. Make good iron-on name tags, too. Sold in large quantities, in case you have particularly aggressive critters, or an extra-long machete.