The GS-1 Dacron mainsail is our all-purpose sail recommended for Finn sailors 94-102kg. The GS-1 Dacron main is also used by lighter teams in light wind (up-to 12 knots). It features a full radial construction and is built out of 3.8oz Dacron sailcloth. The GS-1 Dacron comes standard with a carbon headboard and carbon battens fitted in dacron batten pockets.