Dog Agility Sack Tunnel Nylon (3212) This tunnel is the enhancement of the agility tunnel. It offers your dog a varied training programme and keeps your dog fit. Playing with the dog means to intensify the relationship between dog and master and to build up the faith in the master. The tunnel can be built up and dismantled quickly. Tips for a correct dog training and use are attached to this item. The tunnel has a length of 5 m and is 60 cm in diameter. Colour: dark blue