Prevue Pet snuggle sacks are soft, fuzzy and helps to keep your birds protected from cold drafts. Snuggle sacks hang 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 small size. Measures 6-1/4-inch length by 4-inch width by 6-inch height. Opening measures 2-inch diameter.