Unlike the GrindTainer, the ShredTainer’s teeth are hidden away between the storage vessel and the grinding vessel ensuring unwanted particulate doesn’t get in or out of the grinding area. The ShredTainers two piece sleek design allows for ultimate portability without any of the awkwardness associated with other container grinder combination products. Another tediously engineered feature on the ShredTainer is it’s “Grind Control Cushioning”. Grind Control Cushioning puts the user in control of the consistency of the grind using a shock absorber like, spring action between the container and the grinding cup. This comes in handy depending on the desired application of the end product.