One of the very Lightest wave sails available for 2011 this sail is the same weight as most sails are even on a mast. A Test winning sail ,yet again.
The S-1 is designed for riders who require a light and maneuverable sail that encompasses the technological advances in materials and shaping. The S-1 uses a flatter profile, a tighter skin tension and manoeuvre-biased geometry to respond at the speed of light, allowing precision placement of the rig for any wave or freestyle man oeuvre.

The lightest sail in the range just got lighter. At the pinnacle of windsurfing materials technology, e4 has developed into the new, brighter e5 and shed 25% of its weight. The 2011 S-1 is lighter, has a lower swing weight, more compact, more durable due to a reduction of seams and has been stripped back maintaining only essential technology and materials.

http://www.severnesails.com/2011/media/test_result.php

CONSTRUCTION
1) New e5 upper body with reduced film thickness for the ultimate in weight saving technology
2) HD Dyneema X-Ply foot and clew panels
3) KS Optic X-ply in the upper window section
4) Aramid Torsion Frame - a Kevlar perimeter for maximum strength.
5) Heavy Duty 25mm double stitched window and impact area for increased durability
6) Seamless foot construction with Pro-tect hidden seam load patches.


RIG ERGONOMICS:
Tighter skin tension and a crisp, light feel with a neutral pull
The option of 2 clew positions – higher for more manoeuvrability,
lower for more control

BUY THIS SAIL IF YOU WANT:
A sail that redefines progressive performance and instant response

BOARD TYPE
All wave and freestyle boards