• Made of high quality fabric and resistant seams. 
  • Its triangular shape goes round the tunnel in a very effective way to keep the tunnel stable even with big dogs. 
  • Velcro-adjustable. It is detachable in two parts for easier carrying, and allows maximum adjust. 
  • Can hold up to 40 lbs in each side. 
  • It´s advised to fill them up with gravel instead of sand.
  • It is recommended 1 bag should be used for each 1 meter of tunnel. 

Triangular sandbags velcro