These are true dissipation mats designed to dissipate and absorb impact unlike a typical stall mat. The bottom is lined with perforated lugs allowing the empty space between them to flex and absorb impact. These mats are 40"x40" and 3/4" thick. Most users stand between two mats to deadlift but they can also be pieced together to make a larger area.
Deadlift area: 2-3 mats
Dumbbell bench area: 2-4 mats