Prevue Pet snuggle sacks are soft and fuzzy and help keep your birds protected from cold drafts. It hangs easily in any cage from the attached hooks and provide your birds with an additional space for playing and sleeping. Machine washable and available in red, green and blue with contrasting color around the opening. Available in large size. Measures 8-1/4-inch length by 6-inch width by 9-inch height. Opening measures 3-1/2-inch diameter.