Sheet foam (body) Black (or red) sheet foam (2mm strip)
Dubbing (waist, optional) Black or peacock ice dub (1 pinch)
Round rubber legs Black ostrich herl (3 strands)
Poly yarn (indicator) White or pink poly yarn (1 tuft)
How to tie it
Run a thread base from the eye back to the bend.
Bind a strip of 2mm black foam at the bend, pull it forward, and lock it down at the 45% mark to form the rear hump (the fat gaster); optionally dub a thin waist here.
Figure-8 three strands of black rubber leg across the shank at the waist so they splay out each side; trim later.
Pull the foam forward again and bind it behind the eye to form the front hump (head/thorax); do not crowd the eye.
Post a short tuft of white or pink poly yarn upright over the thorax as a visibility indicator.
Whip finish under the front hump, trim the legs to about a gap-and-a-half, and cement the tie-down points.