These are super squishy silicone D6s with different styles of numbers. 
The bones inside are made of the same silicone as well so they have the same texture all the way through. They come with a free case to keep them clean and safe but can be washed with regular soap and water. 
The silicone is NOT food grade, do NOT put them in your mouth. NO CHEW!
These ones are priced according to how clean they are and how complex the internal pieces are