This kit has everything you need and then some to assemble an amazing 4x2x2 Corn Snake enclosure. 
 
This kit includes:
2x  24qt BioActive Grasslands Substrate
1x  24qt BioActive Rainforest Substrate
3x  Large bags of Leaf Litter
1x Manzanita Branch
1x Mexican Onyx
1x  Large Cork Oak Flat
1x Bag of Sphagnum Moss
2x Bags of Green Mountain Moss
2x Springtail Culture
2x 10+ Isopod- Species determined at time of packing
1x 4-piece Corn Snake Plant Pack, 
 
This Kit was designed to provide you with everything you would need to set up a 4x2x2 Corn Snake BioActive enclosure. All you need to provide in addition is the enclosure, misting system, lighting/heat, and the animal itself!