The velcro to gymnastic mat, they allow connecting mattresses, creating a mat or an extensive training field. Mounted on the side of the mattress. Handles for 5, 10 and 20 cm thick mattresses. The system of connecting mattresses with a flap and Velcro, the system of connecting mattresses with a Velcro: both systems prevent the mattresses from sliding apart and allow you to combine mattresses in any exercise fields, battlefields.
To allow perfect adhesion of the mattress, it is inadvisable to use corners and handles.