Seals Nylon Cockpit Cover
[SEALS-A-CCXXBKSS (5C2)]

The material seems good. Not too thin. But the sizing chart is not accurate. I have a Wilderness Aspire 105 and according to the Seals size chart I needed a 5.5. It does NOT fit, even closely. It's several inches too narrow and too short.

Additional Information from TopKayaker: The cockpit dimensions of the Wilderness Systems Aspire 105 are complicated by the “dashboard”. The inside dimensions (ID) opening hole you sit in, is dramatically different than the outside dimensions (OD) of the cockpit coaming. This may be the source of the cockpit size confusion.

This eventually was found to be a fit. The customer needed a little help from the supporting videos.