We bought the 4 x 10 mat to go under my daughter's bar. We folded it in half so it's a 4x5x4. It fits perfectly under her bar and is extra thick for added safety. I love the design! The colors match her pink and black bar, and folded it makes a landing zone pattern. We have a different mat that is a 5x10, this mat isn't the same quality, but it's a very good mat! It has handles, Velcro for attatching multiple mats, and folds in 4 sections (making a 2.5x4x8). Folded completely it easily slides under our beam for extra padding when she's working on new skills. It is also thick enough to tumble on. This is a great buy!