So the walls are cheapish nylon - and fhe groundsheet is a bit thin, bit it cost me £320 in the end - which is a decent price for a tent this size. I attempted to huy one from doubletree on email - but they couldnt fulfil my order, then put the price up to nearly £400!! And wouldnt honor the original price. Ordered direct from veyvor and it arrived 2 days later. Leaked a bit on the first jight. But thats to be expected from canvas. It will ve fine next time (i hope) instructions are garbage - but it went up easy in 10 mins, with 1 person do the extrnal pegs, then the poles and guys, then do the main pole. Easy. Far better than my air tent that took about 40 mins!!!