Outer Tent 100% Polyester; Inner Tent: 100% Polyamide (Nylon); Base 100% Polyamide (Nylon) Imported Hooped vestibule to expand weatherproof storage for MSR Elixir and Hubba Hubba series tents Integrated partial floor creates a dry, clean place to store gear out of the way Designed to turn small backpacking tents into effective basecamps Extra-large door and integrated design allows convenient, covered access to gear Not compatible with MSR Elixir 4, Mutha Hubba, or Papa Hubba tents