For those of you have been asking...
Lavabear by Nathan Hamill - Short-Sleeve Unisex T-Shirt.
“Back by popular demand, if you missed it in 2014, now is your chance to snap up this cool tee designed by artist, Nathan Hamill.”
Available here: https://craftandpour.com/collections/artists-designs/products/lava-bear-by-nathan-hamill-short-sleeve-unisex-t-shirt