The longitudinal pole has a cross member in the middle and extra shapes at the ends, creating practical width. The Mira II HL takes up very little space in your backpack, making it a favorite choice for backpackers, bicycle tourers and motorcyclists. Due to the tents ultralight nature, the manufacturer recommends using a groundsheet or protective cover. If you're heading into mountainous areas and the weather forecast predicts strong winds, a sturdier tent is advisable. - Inner tent measurements 215 x 160 cm - Three season tent - Three person model - 1550 grams - Aluminm poles: DAC Featherlite - Two doors and vestibules - Fly hydrostatic head: 1500 mm (silicone and polyurethane treated 10 denier ripstop nylon with sealed seams) - Floor hydrostatic head: 1500 mm (laminated 20D ripstop nylon with sealed seams) If you're camping on rough ground that could wear down the tent floor, using a separate groundsheet is recommended. Mira tents are part of the manufacturers Fast + Lite serie