Fed up with Optimist covers that tear, shrink so that they do not fit after a few months or go brittle and tear? Rain and Sun Optimist covers will not do any of this. All materials used are selected for their durability and strength, not cheapness. Every single component - fabric, webbing, buckles, rope and even thread - is chosen for its superior UV resistance and longevity. Hydralite Polyester is Rain and Sun's very best cover fabric with no shrinkage, outstanding UV life and colour retention, very durable and the most water tight breathable fabric available. We will guarantee each of these covers for three years for material and workmanship. Rain and Sun Optimist covers are made to fit properly and will still fit years later. This guarantee excludes colour fading and abuse by the owner! The bottom cover is padded with three longitudinal pockets that are foam-filled.