Lite SteamASeam 2 has the pressure sensitive adhesive the "stick" on one side which allows for a temporary hold to the applique material. It shifts easily on the second material allowing you to quickly reposition your applique pieces until pressed with an iron for a permanent bond. 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 2 is 12 the weight of the regular version. Ideal for sheer lightweight fabrics plus delicate ribbons, trim and lace.