Lite SteamASeam 2 Double Stick has a pressure sensitive adhesive that allows for a temporary hold to both the appliqu material and the background material. There is no pressing until your entire appliqu is in place. Once fused, can be machine washed and dried or dryclean. the manufacturer does not recommend drying with a dryer sheet Bond is strong and permanent. Will not gum up your needle. The Lite SteamASeam is 12 the weight of the regular version. Ideal for sheer lightweight fabrics plus delicate ribbons, trim and lace. 9"x12" sheets. 5 sheets per package.