Been there, and had one
Yes John, well local-ish, I collected them from near Roadford Lake. They’re a rubber mat. I’ll find the link and add it to this. It maybe an idea for you to drop down one day when we’re out of lockdown to see if you like them
Endurance Interlocking Rubber Gym Mats. Endurance integral interlocking rubber gym mats. 2KG Each Tile. The Choice of two Embossed or Stud. · Embossed non-slip d esign on the top. 8mm 50cm x 50cm Indian rubber.