Padded transom with specific trailer board mounting points (industry first).
Neoprene mast gaiter to stop water running down the mast into the cockpit and also due to the neoprene construction it allows the cover to cater for different mast sections and different mast rakes without distorting the cover.
YKK zips. Regarded as the best zips money can buy.
Hugely strong 3 pin clips instead of string or buckles for fastening your cover to your boat which are quicker and easier to fasten with gloves or cold fingers.