NEMO Quantum Elite WindShield
Here's what other sites are saying:
The WindShield gives Nemo Quantum Elite year-around versatility. This 70D nylon ripstop curtain adds an extra layer of protection against wind and bitter temperatures. It attaches quickly over the mesh door by Velcro straps beneath the vestibule. The snow skirt on the bottom of the WindShield prevents spindrift from accumulating inside your tent.