Bird Swing This is knitted with two threads, so it is sturdier than those knitted with one thread. This is a bird swing made by knitting t-shirt yarn onto a plastic ring. ⭐︎ T-shirt yarn is safe because it does not snag on bird claws. [Materials Used] - T-shirt yarn - Plastic ring - Wood *Each item is carefully handmade. *The 4th photo is an example of use. [Size] Approximately: Diameter (outer) 14.5 cm Diameter (inner) width 10 cm Width 1.5 cm