Opto Air uses a modified version of the Opto Line plastic that results in lighter weight discs. The production process is a bit different in that the 'airy' material is more centered in the middle of the rim and spread out slightly over the top of the discs to keep an even weight distribution while the tip and bottom of the rim remain a layer of solid plastic for protection.
The Opto Line is made out of some of the world’s most durable plastics. It comes in a variety of beautiful translucent colors. The Opto Line plastic has been developed to withstand severe punishment and extreme conditions better than other plastics.
The Gold Line is Latitude's premium blend plastic. The start of the mix has been the same brand plastics used in Opto Line but they added a different polymer to give it better grip without losing the excellent durability of Opto Line.
The Zero Line is used in Latitude putters and approach discs. The plastic is chosen because of the good grip and feel. The feel you need in your short game! Zero Line is the soft grippy putter plastic used in our putters and approach discs. Latitude has received much demand for softer Zero Line discs, so they will make an effort to deliver that during 2013.
The Eze Line was used during 2012 and the plan was that it would replace Zero Line. Latitude has not been satisfied with the outcome of some of the discs so production in Eze Line material will be put on hold. During 2013 the premium putter plastic used in Zero Line will be back on the shelves.
The Frost Line was introduced in Nov 2014. Frost Line is very similar to Opto Line but with higher flexibility and stickier grip. It feels good in the hand, has flexibility, durability, and maintains its shape in all conditions. Frost will maintain its shape in cold weather and won't melt in your hand on a sunny day.