For stage work, these are ok. For close-up, parlor, or as a close to your cups and balls routine on the street (where I wanted to use them), forget it. While Wong's sponge tennis balls work because regular tennis balls have some fuzz. Eggs don't. These are obviously fuzzy and anyone within ten feet of you will instantly see these are fake. If you keep your hands moving, it's fine. If you are planning on using this for an egg bag, keep looking. They also don't compress much, so don't expect to get three of these in your hand like regular sponge balls.

These look real from a parlor or stage setting. Bright white and compress well. 4 pack is a great idea.
Highly recommend!
Cecil

Just what I was looking for. I actually needed white sponge balls. I am doing a balls from the mouth type of routine with them and they compress just right. Though I wish there was a Super Soft white sponge ball set. I will be buying more of these.