Keep your canine busy and satisfied while giving him a boost of collagen. Barkworthies 95% Collagen 6-in Beef Sticks Dog Treats are crafted with 95% collagen which also just so happens to be the very first ingredient! Collagen is known to help promote mobility and flexibility help relieve joint pain and stiffness and support skin coat and digestive health. While your paw-tner gnaws away on these long-lasting limited ingredient chews he will also be supporting his overall health and well-being! Features 6 in.