N19: 12 Pentagons (described by R. Lang, previously folded by B. Loper & F. Mancini, independently derived by me)

I designed and folded this and then decided to do some internet searching - lo and behold Byriah had folded this years earlier (not too surprised about that). The dimensions for this rendition are perfect - the units are snug and there is no buckling. Folded from Elephant Hide.

Done