Meet Jack Darlington, a character by Balloonie-cat for his pooltoy TF novella "The Moon Pool".
Jack is an inflatable white tail buck that stands 185cm (6'2") tall. Jack has a large butt valve and a small, standard belly button valve as featured in the book. This is a 0.25mm single chamber build, but with separate chambers for the antlers and his you-know-what (lewd version only). The seams at the throat and the back curve of the neck and back are reinforced.
The SFW version of Jack is available here (Inflatable Animals collection).