Similar to the peak 33 the pro version is highly waterproof with an increased 5000mm hydrostatic head no rain will seep through the seams and drip on your sleepy heads and gear while the continuous flat pole sleeve will greatly improve the wind resistance performance for an all weather shelter in the great outdoors the suberb durability of the silicone coated nylon flysheet takes the strength of this tents construciotn to the next level you will expect no less than high quality performance