The Frozen Olaf Onesie is available in four sizes in ages 4 - 8. It has a cosy fleece hood with a carrot nose and a padded mouth with black button detail down the front and orange embroidered Olaf lettering.
The onesie has a zip fastening for easy on and off, and banded cuffs for keeping arms warm too.
These seem to be on that list of things that sell out and come back and sell out again, and right now the size 4 - 5 years already has low stock, so hurry if you want this to keep someone warm and cozy this Christmas.
Thanks to zedonk1 at HUKD