It's a big egg! It opens! It's copper! I made it! I love it! The egg is made of two raised and formed copper bowls that fit snugly together and latch closed. It and hold anything that you don't want daily access to. I made it for a funerary urn show and it could hold ashes, but it didn't get into the show, so maybe it was meant for something else. The egg is about 8" from tip to tip and could hold about 1 liter. The nest is about 18"wide x 12" deep and is made from hand pealed and bark covered sticks from our apple trees and woods. The egg comes out of the nest.