BAZIC Products Modeling Clay Yellow Color 1 LB, Modeling Dough Art Craft Non Toxic Gift for Artist Kids, Bulk for Classroom, 1-Pack

Yea im not sure entirely what this is made out of. But it isnt your normal modelling clay. Its extremely sticky to the touch, and stretches instead of tearing, when trying to make rounded endges or holes, it is extremely difficult. Needs to be dryer and more solid.

My son needed gray clay for a school project and while this was decent quality, it's overpriced.

As described, worked well for building a river model with students.