[MEASURE]the inside diameter of about: 11.5cm, the space makes your pet more comfortable and free. [WINTER WARMTH]You can do bird home, give your beloved pigeon or bird in a warm quiet home. [COME WITH MAT]This nest with a mat, provides your birds with a nice place for sleeping or breeding. [EASY TO SET UP]This nesting house with built in hook easy to be attached to your cage inside or outside the cage. [NEST FEATURE]Parrot nests are warm and conducive to parrot breeding. It gives your lovely bird a warm and comfortable nest to rest in. It satisfies the climbing and gnawing habits of birds. Colour:creamy-white Material:Cotton rope Size:Inside diameter: about 11.5cm Package Contents: 1 x Bird Breeding Nest 1 x Bird nest pad(random colors, don' accept the specified color) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.