Safe Material: Made of high-quality acrylic material, durable and lightweight, easy to clean. Multi Sizes: Three different sizes, suitable for various bird species. Size S fits Budgerigar, Bismarck Finch, Lovebird, Barred Parakeet, Cockatiel. Size M fits Red-breasted Parakeet, Sun Parakeet, Plum-headed Parakeet, and similar-sized parrots. Size L fits Alexandrine Parakeet, Sulphur-crested Cockatoo (medium & large), Cacatua alba, and large Macaws. Bird Recovery Collar: Helps prevent birds from feather plucking due to stress, boredom, or other behavioral issues. Supports the healing process by reducing self-harm behaviors. All Day Protection: Lightweight, comfortable design minimizes stress and allows extended wear. Aids in breaking the lick-bite and itch-scratch cycle, helping prevent further injury. Wide Applications: Ideal for use during recovery from injuries, skin irritations, or post-surgery care. Can also be used during grooming activities such as bathing or nail trimming. Specifications: Material: Acrylic Color: Transparent Size (Approx): S: 3.5 x 4.8 cm / 1.38 x 1.89 in, Inner Diameter: 3.3 cm / 1.30 in M: 4.3 x 7.2 cm / 1.69 x 2.83 in, Inner Diameter: 3.5 cm / 1.38 in L: 5.5 x 9.5 cm / 2.17 x 3.74 in, Inner Diameter: 4.5 cm / 1.77 in Weight (Approx): S: 52 g M: 58 g L: 65 g Package Includes: 1 Piece Bird Recovery Collar (S/M/L) Note: 1. Please allow 0–1 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the actual color may vary slightly from the image. Thank you!