Dog food specially formulated to prevent the formation of urinary stones. - Brand: Dr's Care - Purpose: For dogs - Type: Urinary stone care - Size: 3kg - pH: 6.1-6.4 Thank you for viewing. I have a 8-year-old Labrador Retriever weighing 30kg, but it is no longer needed due to a different illness. Although there may be individual differences, it suited my dog. The kibble is smaller than Royal Canin. Due to the weight, I cannot take it to a convenience store for shipping, so I am sorry, but please understand that I cannot offer anonymous shipping.