Made with a hard wearing 600D polyester outer laminated to an open cell foam with a brushed tricot lining that allows any spars contained to breathe - which prevents corrosion. The bag can take a spar up to 2350mm, but will easily fold down to take smaller spars if required. This bag length is suitable for an Aero 5 lower mast, a Laser Radial lower mast, a Laser 4.7 lower mast, an Optimist sprit, an Optimist boom or similar