Optimist training club, with pocket for easy fixing on the mast and 2 straps for the boom. - Optimist training club, with pocket for easy fixing on the mast and 2 straps for the boom. Produced in solid fabrics, 3.8 oz., Very durable for many years of service .- 5 fabric surfaces, - Solid reinforcements of the 4 points,- Nailleur: white.A use with the mast ex1012. Optimist White Sleeve Pocket Sail Optiparts DESCRIPTION White Optimist Sleeve Sail, Ideal for Sailing Schools. A Sleeve Pocket for the Optimist Mast at the Luff With A Cut Out For The Sprit Hallyard Block. This sail is made of strong high quality 3.8 oz 100% Dacron Sailcloth. This Optimist Sail Has 4 Heavavil Reinforced Corners, A Loose Foot and Webbing Loops at Both the Tack and the Clew Point To Accommodate the Boom. This Optimist Sail Does Not Have Any Sailbattens. Should be used with sleeve masstSet ex 1052. ALSO Available: Optimist Mast Extenders, 10 and 20 cmthese mast extenders for the Optimist Sleeve MAST EXPENDS THE MAST with 10 or 20 cm to create more space. These mast extenders can be dropped in the top of the optimist sleep mast and moves the sail and boom up.