Super cheap quality. The sponge is about 1/8 inch thick. The plastic is strong but very light. It is very small, only suitable for small soldering irons. Due to its light weight, it is VERY easy to tip over. Even under the weight of the soldering iron and power cord, it tilts to one side. It should be weighted better. Looks much better in photos. Price for what you actually get. I would not buy this item again.