Dome tent lightweight tent capacity 2 man poles aluminium applications trekking camping 3 seasons colours green grey outer material polyester outer material properties pu coated 75d tafetta inner materials 185t polyester taffeta hydrostatic head flysheet 4 000 mm hydrostatic head groundsheet 5 000 mm base materials nylon 70d pole diameters 102 85 mm assembly time 45 minutes construction double wall tent waterproof outer wall breathable