This is the 3rd cot bed mattress protector I have bought. The first was a traditional, cheap waterproof sheet. The second was a Hippychick mattress protector. The cheap sheet is revolting, nasty rubbish. The hippychick sheet is lovely, soft, effective, but very pricey. This is a halfway house between the two. It has a brushed cotton top (think soft and warm) with a PUL layer underneath - PUL is what cloth nappy covers are made from. This means its fairly rustly and will probably get a bit warm in summer but its a million times better than the cheap waterproof covers.
Its a good fit on my standard size cot bed, washes at 60 and can line or tumble dry according to the instructions. For the price I am very happy with it. It can't compare to a hippychick mattress protector, but is less than half the price.