A model of polymer chains as compressible elastic spheres in flow is presented. The spherical polymer blobs are assumed to compress in simple Couette flow in accord with recent rheo-optic measurements on semi-dilute solutions. The experimentally determined decrease in radius with increasing shear rate is predicted by the model. https://www.roneverhart.com/Asus-ROG-Zephyrus-GU502LV-BI7N8-15-6-4K-3840x2160-IPS-Intel-i7-10750H-2-6-GHz-16GB-1TB-SSD-NVIDIA-GeForce-RTX-2060-6G/