What is the difference between the Extreme mats and the Premium mats? I'm looking to cover my garage floor for Crossfit type workouts that include dropping weights.

Our 4' x 6' Premium mats are a vulcanized mat while our Extreme Mats are not. Our 4' x 6' Premium Mats are some of our strongest mats and are virtually trued mats meaning you can put multiple mats together to create a flooring surface. Our Extreme Mat is not trued, so they are not all the same size and are not finished on the bottom. Because they are not finished on the bottom, you will have thickness variances with these mats. This will make it difficult to put these tiles together as a flooring surface. Both are great for CrossFit exercises and would be great as stand-alone mats. The Premium Mats would be the number one choice for a full floor. Quality wise the Premium Mats are the better choice as they are stronger and have less of a smell compared to the Extreme Mats.