Good graphics printing, but size and texture are problems

I could not be happier with the ability to download my image and have stickermule reproduce it so faithfully. This is one reason why I've ordered so many stickers. Although the coasters, too, are faithful to graphic quality, I have found two things that I do not like. First, the size is a bit too small. Most of the other coasters I have are larger in diameter and handle a larger cup size. Second, the printed surface is "sticky." Rather than absorbing condensation or simply preventing damage to table tops, I found the surface adheres to a hot cup of anything (tea, coffee, etc). Consequently when you lift the cup to take a sip, the coaster comes along for the ride. Not an ideal situation.