· These mats may be rolled when packaged. In such cases, the PVC material may take a few hours to return to its original shape once unpacked.
· The mat should be placed smooth side down (facing the floor), textured side up.
PLEASE FOLLOW BELOW STEPS:
· Spread chair mat, begin to roll back from the front direction, put a night, it will naturally flat out.
· Put books in each corners and the mat will be flat out after about 8 hours.
· Or get some warm water to make it soften, spread it to the opposite direction down.