Fatigue mats are most commonly made of polyurethane foam (PU) , styrene-butadiene rubber (SBR), vinyl and injected gel.
The anti fatigue mat will be made of a high density foam covered with a durable rubber outer layer. These types of stand mats are great as they are extremely strong, and can easily handle constant foot traffic and day to day use. The rubber outer layer also makes the mats easy to clean should spills or dirt build up over time.