Complete diet formulated with vitamins A and D3, calcium and chitosan. The yellow sticks contain high quality protein material and are blended with multi-vitamins to promote growth and help keep turtles in peak condition. The green sticks add lactic acid calcium which promotes strong shell structure and helps prevent diseases caused by calcium deficiencies. The red sticks contain chitosan, extracted from crustaceans which activates a turtle's metabolism and makes their skin more resilient while helping to keep their digestive system in top form.