There are 2 things that should be changed with this product...it should come with a spreader like the type that is used with autobody filler but only 2 inches wide in order to coat the soles and heels evenly...the glue tends to glob on coming out of the tube. The only other thing that I would change to improve this product is adding about another ounce to glue to the tube...I barely had enough glue to do both soles and heels...my suggestion would be to purchase 2 tubes of this if you're going to be replacing soles and heels on 2 shoes...the glue has other uses besides shoes.