30-32" x 16-17" (ID) is pretty standard, and any "Regular" or "Large" standard touring or whitewater skirt will fit. You need large to extra-large skirts to fit the 34-36" long x 17-18" wide cockpits of Pygmy and Necky kayaks. Note that these extra large cockpits are probably closer to 38" x 20" OD.

Shawn

: Hi Gerald, I had the same question (in my head) so I emailed a kayak
: manufacturer (Boreal) and they say the cockpit dimensions given on their
: website are the dimensions of the hole in the deck (inside cockpit).
: Example: kayak model Alvik has a cockpit that measures 30" X
: 16". However if you check spray skirts sold for the Alvik they
: measure 33" X 19.75" so I guess this quite clearly means that
: the spray skirt is sized for the outside dimensions. But most off the
: shelf spray skirts are sized "Small, Medium, Large" and these
: dimensions vary from one manufacturer to another.

: If there is someone in your area who can make a sprayskirt for you, you can
: make a cardboard template of the cockpit outside dimensions and they will
: make the spray skirt to fit. Or throw the kayak on the car roof and go to
: a store where they sell spray skirts and try different ones until you find
: the size you want.

: Glen in Baie-St-Paul.