Use 30 rectangle (1:2) and 60 square sheets of origami paper.
Difficulty : ⭐⭐⭐
Time: 3 hours
 
Stunning colors. Red is a blood vessel and blue is oxygen together represent a lung.
 
Model paper size:
Base (blue) : 3.75 cm x 7.5 cm
Pocket (red) : 3.75 cm x 3.75 cm
 
Model height: ~ 7.5 cm
 
PrwOrigami - Kusudama Collection
www.prworigami.com
(December, 2018)