70 denier 6000mm lightweight polyester groundsheet waterproof durable and reliable flysheet and inner pitch together quick and easy to pitch and pack patented vango tbs ii tension band system increases tent performs in adverse conditions especially in strong changeable winds when tensioned the bands brace the pole at 3 points and prevent sideways movement adjust tbs ii to remove slack do not over tension as this may deform the poles can be stowed away in calm weather tunnel tent