To avoid doing part of your exercises on the ground, choose a mat that is larger than you are.
The thickness of your mat is essential: 10 millimetres or more! They are soft feeling and flexible, since they are made of foam. A thick Pilates mat protects you from the heat, coolness, or dampness of the ground. Exercises lying down will be more comfortable, and the mat will absorb your movements to protect your joints from injury.
Resistance to wear
Your mat is an essential part of Pilates, you will use it a lot: so above all, choose a mat that can withstand repeated exercises!