DIGESTIVE HEALTH: These gravel sheets provide grit for hard-billed birds and aids in healthy digestion; the grit helps birds grind up difficult to digest to pass through the gizzard. Crushed Seashells are used for added Calcium Content making these sheets an important nutritional addition to your bird's daily activities CLAW AND BEAK HEALTH: The rough surface of Medium Grit gravel paper helps your birds maintain healthy beaks and claws keeping them trimmed, buffing, and filing your birds’ nails to help prevent overgrowth. Birds love to tear and chew on paper, like a toy distracting from boredom keeping your bird stimulated, occupied, and moving SANITATION: Safe, Clean, and Sanitary, these sheets are disposable - once your bird has torn it up, replace it with another one. Using gravel sheets simplifies the cleanup process helping to maintain cage cleanliness, keeping birds' cage floor and environment hygienic. SUITABLE SIZING: Seven (7) Large 11" x 17" sheets of gravel paper for lining your bird cage, playpen, or activity area. You can simply cut the sheets into sizes that work best with your pets needs. GREAT FOR ALL BIRDS: This item is great for all caged birds including: Parakeet, Parrots, cockatiel, lovebirds, conures, canaries, finches, and many smaller to medium birds.