I bought the size L - it fits well for small husky. For Shepherd or Labrador it would be too small, I think. In works really well - clean the paws, and the water is really dirty after it. I can recommend it, quite comfortable.
If your dog weighs more than 25 kg, then take the largest size. The cooking is quite tough inside, so it's better than torturing a dog.
The goods are good. I recommend the product. Very quickly sent the goods
It's awesome! I used it on my Amstaff (20kg), She got used to it quick. I believe the bigger size would be even better for her size. The product arrived pretty fast in Romania
Dogs are crazy about it