DescriptionEasy to install inside or outside your cage. It can be installed from a tree branch or on your porch anywhere you like. Can be used in four seasons, the included mat can keep the bird warm in winter, takes off the mat in summer, and gives the bird a cool nest. Features-Color: As Shown-Material: shell, rope-Size: 13.50X13.50X5.00cm/5.31X5.31X1.97 in.- Made of safe, harm and natural quality material, durable for use.- Perfect for parakeet, small parrot, cockatoo, cockatiel and other small birds.- Adorable shell house helps greatly to keep warm.- Provides a warm nest for small bird and parrots to play and rest.- It is made of nature material, make the bird feel the breath of nature, so that pets have a sense of belonging.1 x shell nest1 x cushion