Kajak-Sport original hatch cover series is made of real rubber. This model is recommended for roto-molded PE kayaks, and it is the most universal for composite (i.e. fiberglass) kayaks. This is Kajak Sport's driest hatch cover solution and is created for the most demanding "expedition" use, when the cover is used in aberrant conditions and when the maximum reliability is essential.

Kayak brands that use Kajak-Sport hatches include: P&H, TideRace, Current Designs, Eddyline, Nigel Dennis Kayaks (except the day hatch which uses a Valley cover), Tahe, Rebel, Zegul, Rockpool, and late model fiberglass Wilderness Systems Tempests.
Current Designs models that use this size include Prana, Sisu, Karla, Gulfstream, Infinity, Rumor, Willow, Cypress, and possibly more.