We have the latest and greatest in oil concentrate storage technology, the SToK SIL non stick glow in the dark stackable jars! Made with food grade silicone that doesn't smell like "goo". Each pack also comes with a stainless steel dabbing tool. The super neat thing about the SToK SIL jars is that they can be screwed together to make one jar with multiple chambers. Each individual jar is 1.25 x 1". This is the Glow in the Dark version 3 pack. We also carry the 4 pack of colored jars at the same price.